US Pat. No. 10,381,188

RADIOGRAPHIC IMAGE DIAGNOSTIC APPARATUS AND X-RAY TUBE

Canon Medical Systems Cor...

1. A radiographic image diagnostic apparatus, comprising:an X-ray tube comprising
a cathode that emits electrons;
coils that generate electromagnetic force;
an anode that rotates about a rotation axis in response to the electromagnetic force and generates an X-ray by receiving the electrons; and
magnets that are connected to the anode and orbit on a circular orbit around a point on the rotation axis due to the rotation of the anode;
a holding member that holds the X-ray tube so that the X-ray tube is movable; and
coil control circuitry configured to control a current to be supplied to the coils based on at least one of a position of the X-ray tube, a direction of the X-ray tube, and a velocity of the X-ray tube, wherein
the coils comprise
floating coils that generate at least one of attraction or repulsion between the floating coil and the magnets as the electromagnetic force for causing the anode to float in space; and
propulsion coils that generate at least one of attraction or repulsion between the propulsion coil and the magnets as the electromagnetic force for rotating the anode about the rotation axis.

US Pat. No. 10,412,818

X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:an X-ray tube assembly including a filament that emits electrons, a target that generates X-rays by receiving the electrons, and a grid having a potential to adjust a potential gradient around the filament; and
grid potential control circuitry configured to switch the potential of the grid to a potential at which the potential gradient around the filament becomes greater than a potential gradient generated by a potential of the filament and a potential of the target.

US Pat. No. 10,463,316

MEDICAL INFORMATION PROCESSING SYSTEM

Canon Medical Systems Cor...

1. A medical information processing system comprising:setting circuitry configured to set a region of interest in a three-dimensional image that is generated by emitting X-rays to a breast of a subject and imaging the breast from different directions;
generating circuitry configured to generate reference information in which positional information about the region of interest is associated with a schematic diagram of the breast; and
output control circuitry configured to cause output circuitry to output the reference information.

US Pat. No. 10,433,813

ULTRASONIC DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus, comprising:data processing circuitry configured to generate at least B-mode data and Doppler spectral data;
a display configured to display images based on the B-mode data and the Doppler spectral data generated by the data processing circuitry;
input interface circuitry configured to input an instruction to transition to a Doppler spectral mode in which the Doppler spectral data is generate, and input an operation to set a range gate; and
system control circuitry configured to
determine, based on the Doppler spectral data generated in a predetermined time period after the input of the instruction to transition to the Doppler spectral mode is received, whether the generation of data has transited in an order of the B-mode data and the Doppler spectral data and whether aliasing was generated,
change a display form of the Doppler spectral data displayed on the display when it is determined that both the generation of the data transits in the order of the B-mode data and the Doppler spectral data and that the aliasing was generated, does not change the display form of the Doppler spectral data displayed on the display when it is determined that the generation of the data does not transit in the order of the B-mode data and the Doppler spectral data or aliasing was not generated,
wherein the predetermined time period starts upon transition to the Doppler spectral mode.

US Pat. No. 10,307,077

MEDICAL IMAGE DISPLAY APPARATUS

CANON MEDICAL SYSTEMS COR...

1. A medical image display apparatus comprising:a memory configured to store data of a plurality of medical images;
a display configured to display the medical images on a screen; and
control circuitry configured to cause the display to perform switchable display so that the medical images are displayed one by one at a same position on the screen,
wherein the control circuitry controls the display under:
a first rule in which the switchable display is performed for a same slice position using, among the medical images, different-type medical images covering a same region of a subject, the display being configured to (a) automatically unify position, size and directional orientation of a same anatomical region of interest (ROI) within each of a plurality of same slice position medical images obtained by different types of medical imaging techniques and (b) switchably display the unified medical images one-by-one in a same size, position and directional orientation on the screen; and
a second rule in which the switchable display is performed for different slice positions using, among the medical images, same-type medical images covering the same region of the subject, the display being configured to (a) automatically unify size and directional orientation of a same anatomical ROI within each of a plurality of different slices of medical image obtained by a same type of medical imaging technique and (b) switchably display the unified medical images of different slice positions one-by-by in a same size, position and directional orientation on the screen.

US Pat. No. 10,281,592

RADIATION MEASURING APPARATUS, COMPUTER PROGRAM PRODUCT, AND RADIATION COMPUTED TOMOGRAPHY APPARATUS

Canon Medical Systems Cor...

1. An X-ray measuring apparatus comprising:a detector including a plurality of detecting elements each configured to convert energy of an incident X-ray into a first electrical signal;
a plurality of comparators corresponding to the respective detecting elements, each comparator being configured to output a second electrical signal when a level of the corresponding first electrical signal is higher than or equal to a threshold;
a threshold controller configured to supply a first value as the threshold to the respective comparators at a first time, and supply a second value as the threshold to the respective comparators at a second time different from the first time;
a plurality of counters corresponding to the respective comparators, each counter being configured to count the corresponding second electrical signal; and
a pulse height frequency distribution generator configured to generate a pulse height frequency distribution of the X-ray by using counts of the counters.

US Pat. No. 10,489,905

METHOD AND APPARATUS FOR PRESENTATION OF MEDICAL IMAGES

Canon Medical Systems Cor...

1. An apparatus for displaying medical images, the apparatus comprising processing circuitry configured to:obtain a first set of medical imaging data from a first scan of an anatomical region of a subject;
obtain a second set of medical imaging data from a second scan;
process the first set of medical imaging data to detect at least one pathological feature and to determine at least one property associated with the at least one detected pathological feature;
select at least one display rule for the second set of medical imaging data in dependence on the determined at least one property, and
display at least one image representative of the second set of medical imaging data in accordance with the selected at least one display rule, such that the at least one displayed image provides a desired view of the at least one pathological feature or an anatomical feature associated with the at least one pathological feature.

US Pat. No. 10,475,213

X-RAY CT APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography (CT) apparatus comprising:an X-ray detector; and
processing circuitry configured to:
every time any of a plurality of reconstructed CT images which are reconstructed based on X-rays detected by the X-ray detector is designated as a display object image, cause the CT image designated as the display object image to be displayed on a display, and perform preprocessing on raw data corresponding to the CT image designated as the display object image, and
when the processing circuitry receives an enlargement instruction to enlarge the CT image displayed on the display, reconstruct an enlarged CT image using the raw data, which is preprocessed after the CT image is designated as the display object image and before the processing circuitry receives the enlargement instruction, based on the enlargement instruction, and cause the reconstructed enlarged CT image to be displayed on the display, wherein
the processing circuitry causes, until reconstruction of the enlarged CT image is completed, an enlarged image obtained by enlarging the CT image designated as the display object image to be displayed on the display, and causes, after completion of the reconstruction, the enlarged CT image to be displayed on the display.

US Pat. No. 10,413,252

MEDICAL IMAGE DISPLAY APPARATUS AND MEDICAL IMAGE MANAGEMENT SYSTEM

Canon Medical Systems Cor...

1. A medical image display apparatus for image interpretation comprising:reception circuitry configured to
receive a plurality of medical images imaged by a medical imaging apparatus before performing image inspection corresponding to an operation to confirm whether the medical images are available for the image interpretation,
receive first progress information corresponding to each of the medical images, the first progress information indicating that image inspection for each of the medical images is in progress in a medical image inspection apparatus, and
receive second progress information corresponding to each of the medical images, the second progress information indicating completion of the image inspection for each of the medical images;
a storage configured to store the medical images and the first progress information;
control circuitry configured to
update, if the second progress information is received, the stored first progress information to the received second progress information regarding each of the medical images corresponding to the received second progress information,
perform, if the first progress information is updated to the second progress information, a predetermined process for a medical image corresponding to the updated second progress information among the medical images in accordance with a result of the image inspection, and
control a display to
display the medical image determined to be suitable for image interpretation in the medical image inspection apparatus among the medical images stored in the storage; and
not display the medical image determined to be unsuitable for image interpretation in the medical image inspection apparatus among the medical images stored in the storage; and
the display configured to display only the medical image suitable for image interpretation.

US Pat. No. 10,393,830

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:an amplifier configured to supply, based on an imaging sequence, an RF pulse to an RF coil, which generates a radio frequency magnetic field;
a capacitor bank configured to supply an electric power to the amplifier; and
processing circuitry configured to judge whether an imaging by the imaging sequence is able to be executed, based on a condition of the RF pulse in the imaging sequence and an output efficiency of the amplifier,
wherein the processing circuitry is further configured to
calculate a voltage drop in the capacitor bank, based on the condition of the RF pulse and the output efficiency of the amplifier, and judge whether the imaging is able to be executed, based on the voltage drop; and
calculate a heat loss amount in the amplifier, based on the output efficiency, and judge whether the imaging is able to be executed, based on the heat loss amount and the voltage drop.

US Pat. No. 10,390,728

MEDICAL IMAGE DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnosis apparatus, comprising:a capturing device configured to photograph a target site of a subject and a puncture needle inserted into the target site to capture a medical image;
a calculator configured to
perform measurements of a position of a sensor located at an opposite end from a needle tip of the puncture needle inserted into the target site and a tilt angle of the puncture needle, and
obtain a position of the needle tip based on results of the measurements and a needle length, which corresponds to a length of a straight line from the position of the sensor to the position of the needle tip, to acquire positional information of the puncture needle; and
a display processor configured to
arrange scales, which are graduated at predetermined intervals, along a guideline according to the position of the needle tip and the tilt angle of the puncture needle obtained when the puncture needle reaches a cauterization object in the target site, and
display the guideline with the medical image.

US Pat. No. 10,413,270

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus comprising:a holding device configured to hold an X-ray generator and an X-ray detector such that the X-ray generator and the X-ray detector are rotatable around a rotation axis;
a driving unit including a driving motor and a power transmission mechanism and configured to transmit a rotating force of the driving motor to the rotation axis through the power transmission mechanism so as to rotate the holding device;
a first encoder configured to detect a rotation of the driving motor;
a second encoder configured to detect a rotation of the rotation axis; and
processing circuitry configured to detect an abnormal state of the power transmission mechanism, based on a time difference between a first pulse of a first pulse signal output from the first encoder and a corresponding second pulse of a second pulse signal output from the second encoder.

US Pat. No. 10,417,808

IMAGE PROCESSING SYSTEM, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An image processing system, comprising:processing circuitry configured to:
generate a first plurality of parallax images for displaying a stereoscopic image virtually observed in three-dimensional virtual space coordinates, and output the first plurality of parallax images, wherein the stereoscopic image includes a subject and two points;
accept a movement operation for moving positions of the two points on the stereoscopic image;
generate a second plurality of parallax images for displaying the stereoscopic image in which the two points are displayed at positions after a movement in accordance with acceptance of the movement operation, and output the second plurality of parallax images;
accept setting of two coordinates on the stereoscopic image, by accepting an operation to determine positions of the two points on the stereoscopic image;
acquire two coordinates in real space coordinates corresponding to the two coordinates in the three-dimensional virtual space coordinates by converting stereoscopic image coordinates for indicating the two coordinates accepted on the stereoscopic image into volume data coordinates corresponding to the stereoscopic image coordinates in volume data of the subject that is stored in a prescribed storage circuitry;
execute a measuring process of measuring a distance between the two coordinates in the real space coordinates; and
output a result of measurement.

US Pat. No. 10,413,236

MEDICAL-IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A medical-image processing apparatus comprising:processing circuitry configured to:
extract a disease candidate region from a medical image;
divide the disease candidate region into an internal region and an external region, by performing erosion to the disease candidate region, the erosion being repeatedly performed so that a ratio between a size of the internal region and a size of the external region becomes a predetermined ratio;
extract a first feature vector of the internal region and a second feature vector of the external region;
generate a combining vector by combining the first feature vector and the second feature vector; and
estimate a disease state of the disease candidate region by using the combining vector,
wherein a number of elements of the combining vector is a total number of elements obtained by adding a number of elements of the first feature vector and a number of elements of the second feature vector wherein the processing circuitry is configured to: accept an estimation result in which a disease state of the disease candidate region is estimated; generate a classifier for a computer-aided diagnosis based on the combining vector and the estimation result; and estimate a disease state of a newly extracted disease candidate region by using the classifier.

US Pat. No. 10,401,355

TEST REAGENT, TEST REAGENT KIT, AND SPECIMEN MEASURING SYSTEM

Canon Medical Systems Cor...

1. A test reagent kit comprising:a test reagent comprising a reactant and a sheet-shaped member, wherein the reactant is in a dry state and specifically reacts with a test substance, and the sheet-shaped member holds the reactant, disperses in a solvent solution, and is a fibrous substance that is not concerned in the reaction between the test substance and the reactant;
a container comprising a storage vessel and a nozzle, the storage vessel being configured to store the solvent solution and in which the test reagent is to be put; and
a filter stored in the container between the storage vessel and the nozzle, and configured to separate the dispersed sheet-shaped member dispersed in the solvent solution from a solution mixture of the test reagent and the test substance put in the solvent solution,
wherein the nozzle is configured to externally pour a measurement solution in which the sheet-shaped member is separated from the solution mixture by the filter.

US Pat. No. 10,390,778

GANTRY

Canon Medical Systems Cor...

1. A gantry comprising:a rotating frame including an X-ray tube and an X-ray detector configured to detect X-rays emitted from the X-ray tube;
a fixing mechanism configured to support the rotating frame so as to be rotatable on a rotation axis;
a cover configured to cover the rotating frame; and
an air sending mechanism that is installed on a lateral face on an outer circumferential side of the cover with respect to the rotation axis and is configured to send air sucked in from an exterior of the rotating frame to the rotation axis side of the rotating frame, wherein
the air sending mechanism is installed so as to be offset from the rotating frame, to be tilted at a predetermined angle with respect to the rotation axis direction, and to be tilted with respect to a plane vertical to the rotation axis direction.

US Pat. No. 10,390,786

X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus which generates an object image by detecting X-rays having passed through an object, the X-ray diagnostic apparatus comprising:a display configured to display the object image;
memory circuitry to store feature information items for distinguishing the object image from other images:
processing circuitry configured to perform display-order change processing, which is processing of changing a display order of the feature information items, and to cause the display to display the feature information items subjected to the display-order change processing as alternates; and
an input circuit configured to receive input of selecting a feature information item from the feature information items displayed on the display,
wherein the processing circuitry is further configured to
perform extraction processing which is processing of narrowing number of the feature information items down to predetermined number based on medical information related to at least one of examination and treatment,
cause the display to display the predetermined number of the feature information items extracted by the extraction processing as the alternates, and
acquire information on a treatment plan with respect to the object as the medical information and to select a treatment stage identified based on the information on a treatment plan as one of the alternates.

US Pat. No. 10,386,442

MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD CONTROLLING EXECUTION OF A PULSE SEQUENCE BASED ON RECOVERY OF LONGITUDINAL MAGNETIZATION OF A MONITOR REGION

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:processing circuitry configured to execute a pulse sequence to acquire data from an image taking region after applying a first pre-pulse to the image taking region in synchronization with a predetermined electrocardiographic waveform of a subject, wherein
the processing circuitry is further configured to:
acquire data from a monitor region that is different from the image taking region after applying a second pre-pulse to the monitor region, by using timing linked with timing with which the first pre-pulse is applied;
monitor a degree of recovery of longitudinal magnetization in the data acquired from the monitor region; and
control execution of the pulse sequence in accordance with the degree of recovery of longitudinal magnetization.

US Pat. No. 10,371,700

IN-VITRO DIAGNOSTIC

Canon Medical Systems Cor...

1. An in-vitro diagnostic comprising:a housing for a liquid comprising a test substance contained in a sample extracted from a subject;
an optical waveguide as a support;
a substance layer, on the optical waveguide, that stores a substance that specifically reacts with the test substance and a first blocking agent that supports the substance, wherein the substance is bound to a surface of the optical waveguide; and
a dry film comprising a soluble coating agent and a second blocking agent separating the housing and the substance layer, wherein the dry film covers a surface of the substance layer, wherein the dry film does not contain a substance that specifically reacts with the test substance, and wherein the second blocking agent is different from the first blocking agent.

US Pat. No. 10,346,984

MEDICAL IMAGE PROCESSING APPARATUS, MEDICAL IMAGE PROCESSING METHOD, AND X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. A medical image processing apparatus, comprising:processing circuitry configured to
acquire image data including image data of a coronary artery of a subject;
extract a region corresponding to the coronary artery from the image data;
obtain, by performing fluid analysis, a first index value related to a pressure of a blood flow flowing in the coronary artery as a first analysis result;
display the first analysis result;
obtain, by using a region of interest set based on the displayed first analysis result and performing fluid analysis based on a synthesis model, a second index value related to the pressure of the blood flow flowing in the coronary artery as a second analysis result, the synthesis model being obtained by coupling a first fluid analysis model corresponding to the region of interest and a second fluid analysis model corresponding to a region different from the region of interest, wherein an analysis accuracy of the second fluid analysis model is lower than that of the first fluid analysis model; and
display the second analysis result.

US Pat. No. 10,310,098

DETERMINE POSITION OF SCATTERED EVENTS IN PIXELATED GAMMA DETECTOR USING INVERSE ENERGY WEIGHTING

CANON MEDICAL SYSTEMS COR...

1. A positron emission imaging apparatus, comprising:processing circuitry configured to
obtain emission data representing positions and energies of gamma rays incident at a plurality of detector elements, each detector element of the plurality of detector elements including a respective photodetector and scintillator crystal, the scintillator crystal of the each detector element being, at least partially, isolated from other scintillator crystals of the plurality of detector elements,
correct an incident position of a primary gamma ray, when the primary gamma ray is scattered, using an inverse-energy weighting to combine a position of the primary gamma ray with a position of a corresponding scattered gamma ray to generate a corrected position, wherein the inverse-energy weighting divides a respective position of the emission data by a corresponding energy of the emission data that have been raised to a power p, wherein p is a positive number, and
reconstruct an image using the emission data together with the corrected position.

US Pat. No. 10,241,385

DISPLAY DEVICE AND MEDICAL DIAGNOSTIC IMAGING DEVICE

Canon Medical Systems Cor...

1. A display device comprising:a reflecting member having a reflecting surface that is an aspheric surface, and having an optical property that reflected light of parallel light incident on the reflecting surface is focused to a focal point, the reflecting member being fixed to a couch top configured for a user to lie down on; and
a display having a display surface for displaying an image, the display being fixed to the couch top so that the display surface is positioned between the focal point and the reflecting surface to face the reflecting surface, wherein
the reflecting member and the display are disposed so that two virtual viewpoint positions corresponding to eyes of the user are present within a first area formed in between the focal point and the reflecting surface.

US Pat. No. 10,159,457

X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:an X-ray detector including a first detector and a second detector capable of simultaneously detecting X-rays irradiated from an X-ray tube; and
processing circuitry configured to correct, by using information of a second image that is based on an output from the second detector, a first image that is based on an output from the first detector.

US Pat. No. 10,436,915

MEDICAL IMAGE DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnosis apparatus, comprising:a self-radioactive scintillator constituted of a single crystal;
a plurality of photon detectors that are arranged at a plurality of different positions in the scintillator, each photon detector of the plurality of photon detectors configured to output a corresponding electrical signal according to a corresponding quantity of radiation radiated from the scintillator and received by the photon detector; and
calibration circuitry configured to calibrate each corresponding electrical signal output from each photon detector of the plurality of photon detectors such that calculation results based on the corresponding electrical signal output from each photon detector of the plurality of photon detectors are identical among the plurality of photon detectors.

US Pat. No. 10,417,778

ULTRASONIC DIAGNOSTIC APPARATUS AND MEDICAL IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus, comprising:a memory to store a program; and
processing circuitry configured, by executing the program, to perform alignment between a live image of a plurality of live images and a reference image of a plurality of reference images,
wherein the plurality of live images include a live fundamental image and a live harmonic image,
when the alignment is performed, the live image is set to the live fundamental image and then the alignment is performed between the live fundamental image and the reference image, and
after the alignment is completed, the live image is switched from the live fundamental image to the live harmonic image.

US Pat. No. 10,416,250

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging (MRI) apparatus, comprising:a wireless radio frequency (RF) coil;
a whole body coil configured to transmit an RF pulse having a Larmor frequency to an object;
a control-side oscillator configured to output a control-side clock signal to execute a pulse sequence; and
a synchronization signal transmission circuit configured to wirelessly transmit a synchronization signal to the wireless RF coil in an executing period of the pulse sequence, except in an MR-signal detection period during which the wireless RF coil detects a magnetic resonance signal,
wherein the synchronization signal is to synchronize a clock signal in the wireless RF coil with the control-side clock signal, a frequency of the synchronization signal is within a frequency band of the Larmor frequency, and the synchronization signal reflects a phase of the control-side clock signal.

US Pat. No. 10,416,267

APPARATUS AND METHOD FOR CALIBRATION OF TIME ORIGIN OF AN RF PULSE IN MRI DATA ACQUISITION SYSTEMS

Canon Medical Systems Cor...

1. A method for determining a time origin of an input RF pulse of a plurality of input RF pulses, the method comprising:generating, by circuitry, an RF echo based on the plurality of input RF pulses, a time-duration between the input RF pulses being controllable in order to determine a time instance corresponding to an ideal position of the RF echo;
computing a time-difference between a time corresponding to a measured peak of an acquired data signal and the time instance corresponding to the ideal position of the RF echo, the computed time difference corresponding to a measure of a time-shift of the time origin of the input RF pulse;
repeating, for a predetermined number of iterations, the steps of generating the RF echo based acquiring the data signal;
computing, for each subsequent iteration, a time-difference between a measured peak of the data signal that is subsequently acquired and an ideal position of a subsequent RF echo; and
computing the measure of the time-shift of the time origin of the input RF pulse based on the computed subsequent time-differences.

US Pat. No. 10,405,822

X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. An X-ray CT apparatus comprising processing circuitry configured toacquire a scan region and a first scan range, and
change, while the scan region is being scanned, the first scan range to a second scan range based on projection data of the scan region acquired by the scan.

US Pat. No. 10,408,897

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:a first transmit coil configured to transmit a first RF pulse corresponding to a resonance frequency of a first nuclide species in an object placed in an imaging space;
a first receive coil configured to receive a first NMR signal of the first nuclide species;
a cable connected to the first receive coil;
a balun attached to at least one of the cable and the first receive coil;
a substance attached to at least one of the balun and vicinity of the balun, the substance including a second nuclide species having a resonance frequency different from the resonance frequency of the first nuclide species;
a second transmit coil configured to transmit a second RF pulse corresponding to a resonance frequency of the second nuclide species; and
a second receive coil configured to receive a second NMR signal of the second nuclide species in the substance.

US Pat. No. 10,405,833

ULTRASONIC DIAGNOSTIC APPARATUS AND PROBE PRESSURIZATION/DEPRESSURIZATION INFORMATION DISPLAY METHOD

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus, comprising:an ultrasonic probe;
transmission/reception circuitry configured to transmit an ultrasonic wave to an object and receive a reflected wave from the object as an echo signal via the ultrasonic probe;
velocity distribution information generation circuitry configured to generate, based on the echo signal, velocity distribution information of a tissue in the object in accordance with an operation of pressurization or depressurization using the ultrasonic probe by an operator;
index information generation circuitry configured to generate state information representing a cycle of the pressurization or the depressurization of the operation and target information representing a target cycle of the pressurization or the depressurization of the operation, based on the velocity distribution information; and
a display configured to display the cycle in the form of a length of a second side in a predetermined graphic pattern representing the state information and the target information, the graphic pattern including a first side and the second side, display the state information and the target information as the graphic pattern, and display the graphic pattern upon changing the length of the second side of the graphic pattern in accordance with a change in the cycle of the pressurization or the depressurization in the state information.

US Pat. No. 10,401,507

COLLIMATOR, RADIATION DETECTOR, AND RADIATION EXAMINATION APPARATUS

Kabushiki Kaisha Toshiba,...

1. A collimator comprising:a plurality of modules each of which has a grid formation and in each of which a plurality of walls are arranged in a row in a first direction and a second direction intersecting the first direction;
a connecting part having at least one plate-like member that is provided at an end of each of the plurality of modules and that projects in the first direction; and
a connector combined, in a grid formation, with the connecting parts of adjacently-positioned modules in the plurality of modules, and configured to connect the adjacently-positioned modules in the first direction, wherein
each of the plurality of modules includes the plurality of walls that include a plurality of first walls arranged in a row at intervals in the second direction and a plurality of second walls arranged in a row at intervals in the first direction,
the connecting part includes a first face oriented in the second direction, a second face positioned on the opposite side of the first face and oriented in the second direction, two projecting parts that project from the first face in the second direction, and a first opening formed between the two projecting parts and extending through the connecting part in the second direction from the first face to the second face,
the connector extends in the second direction, and is configured to be inserted through and fitted in the first openings of the connecting parts of the adjacently-positioned modules in a state that the connecting parts of the adjacently-positioned modules are arranged in a row at intervals in the second direction and that the two projecting parts of one of the adjacently-positioned modules are in contact with the connecting part of the other of the adjacently-positioned modules, and
when the connector has been fitted in the first openings of the connecting parts of the adjacently-positioned modules, the connector and the two projecting parts form a single wall and accordingly form a plurality of through openings together with the first and the second walls.

US Pat. No. 10,436,870

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising processing circuitry configured:to detect, by using image data of a subject acquired by performing a first imaging process, a first region including at least a part of a first site, the first site having a symmetrical relationship with a second site in the subject;
to derive a second region including at least a part of the second site on a basis of the first region; and
to set a Radio Frequency (RF) pulse application region used for performing a second imaging process, on a basis of the second region.

US Pat. No. 10,416,321

X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:an X-ray detector including a first detector and a second detector configured to simultaneously detect X-rays irradiated from an X-ray tube; and
processing circuitry configured to, when displaying one of a first image based on output from the first detector and a second image based on output from the second detector on a display, display the other one of the first image and the second image corresponding to a partial region of the one of the first image and the second image,
wherein the second detector is positioned with respect to the first detector such that (i) a detection region of the second detector overlaps with a detection region of the first detector in a first region, and (ii) the detection region of the first detector and the detection region of the second detector do not overlap in second and third regions located on opposite sides of the first region.

US Pat. No. 10,408,899

MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT MAGNETIC FIELD POWER SUPPLY DEVICE

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a gradient magnetic field coil configured to apply gradient magnetic field to an object, the gradient magnetic field coil including a plurality of channels; and
a gradient magnetic field power supply configured to calculate a required power for each channel, and distribute maximum power to a channel requiring higher power than the required power of other channels with priority to the other channels, the maximum power being a limit value of total power to be supplied to the channels as a whole, wherein
the gradient magnetic field power supply includes:
an AC/DC conversion circuit configured to convert an AC voltage to a DC voltage;
DC transformation circuits configured to transform the DC voltage, the DC transformation circuits corresponding to the channels; and
a control circuit configured to distribute the maximum power to the channel requiring higher power than the required power of the other channels with priority to the other channels based on the required power of each of the channels.

US Pat. No. 10,410,341

X-RAY DIAGNOSTIC APPARATUS AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:an X-ray tube configured to generate X-rays;
a first detector configured to detect the X-rays generated by the X-ray tube and transmitted through an object;
a second detector including a detection surface narrower than a detection surface of the first detector, and configured to detect the X-rays generated by the X-ray tube and transmitted through the object;
a support arm configured to support the X ray tube, the first detector, and the second detector, wherein the object is located on a path of the X-rays between the X-ray tube and the first and second detectors;
image generation circuitry configured to generate a first image based on an output from the first detector and to generate a second image based on an output from the second detector, the first image and the second image being obtained in a same projection direction;
positional shift detection circuitry configured to detect a positional shift of the second detector relative to the first detector by detecting projection images of the object on the first image and on the second image; and
positional shift correction circuitry configured to correct a positional shift of the second image by using the positional shift of the second detector relative to the first detector.

US Pat. No. 10,398,403

HIGH VOLTAGE GENERATION APPARATUS, X-RAY CT APPARATUS, AND POWER SUPPLY APPARATUS

Canon Medical Systems Cor...

1. A high voltage generation apparatus, comprising:power factor improvement circuitry configured to improve a power factor of alternating current (AC) power output from an AC power source in order to supply an X-ray tube with power that is controlled based on a reference voltage; and
gain adjustment circuitry included in the power factor improvement circuitry, the gain adjustment circuitry being configured to adjust a gain of the AC power output from the AC power source relative to the reference voltage so that the gain differs between a first period including a start of irradiation of X-rays by the X-ray tube and an end of irradiation of X-rays by the X-ray tube, and a second period different from the first period.

US Pat. No. 10,470,733

X-RAY CT DEVICE AND MEDICAL INFORMATION MANAGEMENT DEVICE

Canon Medical Systems Cor...

1. An X-ray CT device comprising:an X-ray tube;
a detector configured to detect a transmitted X-ray emitted from the X-ray tube and transmitted through a subject;
image reconstruction circuitry configured to, in positioning imaging performed at a first tube current, reconstruct a positioning image from projection data collected based on a detection signal of the transmitted X-ray from the detector;
storage configured to store information pieces relating to a plurality of body parts of the subject, a plurality of image quality levels for each of the information pieces relating to the body parts, and information relating to a first X-ray count value corresponding to each of the image quality levels in an associated manner; and
processing circuitry configured to detect a plurality of body parts of the subject included in the positioning image, select a desired body part and an image quality level corresponding to the desired body part, acquire information relating to a second tube current in main imaging based on information relating to the first tube current, information relating to a second X-ray count value in the positioning imaging, and information relating to the first X-ray count value associated with the selected image quality level, and control the X-ray tube to execute the main imaging based on the acquired second tube current.

US Pat. No. 10,417,759

MEDICAL IMAGE DATA PROCESSING SYSTEM AND METHOD

Canon Medical Systems Cor...

1. A medical image data processing system, comprising:processing circuitry configured to:
receive a three-dimensional medical imaging data set; and
process the received three-dimensional medical imaging data set, including
determining an axis;
determining a plurality of planes extending around the axis and tilted relative to the axis such that the planes are aligned with sub-structures, the sub-structures being comprised of at least one anatomical structure;
for each plane of the plurality of planes, casting a respective plurality of rays extending radially across the plane from the axis, and for each ray of the respective plurality of rays, estimating a respective manifold position by determining an intersection of the ray with bone;
determining a manifold that intersects bones included in the sub-structures and represents a shape of the at least one anatomical structure by using the estimated manifold positions; and
obtaining an unfolded view by sampling a plurality of points on the determined manifold.

US Pat. No. 10,417,795

ITERATIVE RECONSTRUCTION WITH SYSTEM OPTICS MODELING USING FILTERS

Canon Medical Systems Cor...

1. A computed tomography (CT) imaging apparatus, comprising:a processing circuit configured to
obtain projection data collected by a CT detector during a scan of an object;
perform iterative reconstruction of the projection data to generate a current image, each cycle of the iterative reconstruction including filtering the current image before forward projection with a filter that models system optics and operates on image data; and
combine the current image with a previously-obtained image to generate an updated image.

US Pat. No. 10,405,817

X-RAY IMAGE DIAGNOSIS APPARATUS AND MEDICAL SYSTEM

Canon Medical Systems Cor...

1. An X-ray image diagnosis apparatus, comprising:an X-ray tube configured to emit X-rays toward a subject;
an X-ray detector configured to detect the X-rays having passed through the subject; and
processing circuitry configured to
acquire fluid information on a target site including a region of interest of the subject captured by an ultrasound image diagnosis apparatus,
extract position information of a probe of the ultrasound image diagnosis apparatus, and
control a capturing direction for capturing the target site based on the position information and a direction in which a fluid flows, which is indicated by the fluid information, wherein
the fluid information includes information on a forward flow component as a normal blood flow and a reverse flow component as an abnormal blood flow in a prosthetic valve placed in the region of interest, and
the processing circuitry is further configured to obtain the capturing direction with the X-rays based on a position of the reverse flow component.

US Pat. No. 10,401,449

MAGNETIC RESONANCE IMAGING APPARATUS TO CALCULATE CURRENT IN AN EQUIVALENT CIRCUIT INCLUDING A GRADIENT COIL

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a processing circuit configured to calculate, based on an imaging sequence to be executed in magnetic resonance imaging, a value of a current by using an equivalent circuit, and configured to determine, prior to an execution of the imaging sequence, based on the calculated value of the current, whether executing the imaging sequence is acceptable; and
a sequence control circuit configured to execute the imaging sequence when the processing circuit determines that executing the imaging sequence is acceptable,
the equivalent circuit being an equivalent circuit for a circuit that includes a gradient coil and that has a first circuit and a second circuit, the first circuit being connected to a power supply and having self-inductance, and the second circuit including at least one closed circuit having mutual inductance with the first circuit, the current flowing through the at least one closed circuit, wherein
the processing circuit is further configured to calculate an energy consumed in the second circuit based on the current flowing through the at least one closed circuit, and determine whether the imaging sequence is acceptable based on the calculated energy consumed in the second circuit.

US Pat. No. 10,398,395

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus comprising:storage circuitry configured to store three-dimensional medical image data that is obtained by imaging a subject; and
processing circuitry configured to
set a first region of attention in a first medical image in which the subject is shown from a first direction in the three-dimensional medical image data and a second region of attention in a second medical image in which the subject is shown from a second direction different from the first direction in the three-dimensional medical image data, based on operations accepted from an operator or the operator's line of sight with respect to the first medical image and the second medical image,
calculate a first depth region that is three-dimensional region obtained by extending the first region of attention in the depth direction on the three-dimensional medical image data and a second depth region that is three-dimensional region obtained by extending the second region of attention in the depth direction on the three-dimensional medical image data,
calculate, as the region of interest, a group of voxels contained in both the first depth region and the second depth region,
determine, based on voxel values of the region of interest, a candidate for parameter value relating to image processing on a medical image to be generated from the three-dimensional medical image data, and
cause a display to display the candidate for parameter value.

US Pat. No. 10,330,801

RADIATION DETECTOR, MEDICAL IMAGE DIAGNOSIS APPARATUS, DETECTOR PACKAGE, SCINTILLATOR ARRAY, SCINTILLATOR ARRAY MANUFACTURING METHOD, AND RADIATION DETECTOR MANUFACTURING METHOD

Canon Medical Systems Cor...

1. A radiation detector comprising:a photodiode array having a plurality of active areas arranged in a grid formation; and
a scintillator array that is laminated on the photodiode array, is configured to emit light in response to incidence of radiation thereto, and has a plurality of modification parts that do not penetrate therethrough in regions each corresponding to a position between two of the active areas, for a purpose of preventing crosstalk, the plurality of modification parts each being an aggregation of cracks.

US Pat. No. 10,426,444

ULTRASONIC DIAGNOSIS APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasonic diagnosis apparatus, comprising:an ultrasonic probe;
an image generating processor configured to generate an ultrasonic image, based on an echo signal which is obtained through the ultrasonic probe;
a monitor configured to display the ultrasonic image;
a memory configured to store image data, the image data including the ultrasonic image displayed on a screen of the monitor and at least one scale mark with respect to the ultrasonic image;
a calibration information generation processor configured to determine whether a plurality of numerical values exist near the at least one scale mark, and generate, when it is determined that the plurality of numerical values exist, calibration information based on the plurality of numerical values and the at least one scale mark, the calibration information including a conversion value for performing a predetermined measurement with respect to the ultrasonic image included in the image data; and
a control processor configured to control the monitor to display the ultrasonic image in accordance with the calibration information.

US Pat. No. 10,395,386

IMAGE PROCESSING APPARATUS AND X-RAY DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. An image processing apparatus comprising processing circuitry configured todetect a position of an object included in each of sequentially generated X-ray images;
generate corrected images sequentially by a correction process to substantially match, with a reference position, the detected position of the object in a X-ray image generated after a reference X-ray image, the reference position being the detected position in the reference X-ray image;
determine an addition condition of each region of one of the sequentially generated corrected images, the addition condition including at least one of a weighting coefficient with regard to addition of the one of the sequentially generated corrected images and a number of the corrected images to be added; and
cause a display to display an added image to which the one of the sequentially generated corrected images is added in accordance with the determined addition condition.

US Pat. No. 10,390,794

ULTRASOUND DIAGNOSTIC APPARATUS AND ULTRASOUND PROBE

Canon Medical Systems Cor...

1. An ultrasound diagnostic apparatus, comprising:an ultrasound probe including a plurality of transducers, a first memory, and binary state generation circuitry;
an apparatus main body to which the ultrasound probe is connected;
a second memory included in the apparatus main body and storing list information concerning a plurality of probe identifiers respectively corresponding to a plurality of ultrasound probes; and
processing circuitry included in the apparatus main body,
wherein the first memory stores probe use history information and encrypted probe identification information, the encrypted probe identification information being encrypted based on the probe use history information by the processing circuitry; and
the binary state generation circuitry is configured to generate a binary electrical state; and
the processing circuitry is further configured to
convert the binary electrical state into a probe identifier;
read the encrypted probe identification information and the probe use history information from the first memory;
decrypt the encrypted probe identification information based on the probe use history information;
determine whether there is first consistency between the probe identifier and the stored list information;
determine whether there is second consistency between the decrypted probe identification information and the stored list information; and
output a predetermined warning when there is not at least one of the first consistency and the second consistency.

US Pat. No. 10,376,236

ULTRASOUND DIAGNOSTIC APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasound diagnostic apparatus comprising:an ultrasound probe configured to emit ultrasound waves and detect reflected waves that are used to generate ultrasound image data, the ultrasound image data representing two- or three-dimensional ultrasound images of a target-including region containing a tissue in motion, the ultrasound images corresponding to a plurality of temporal phases; and
processing circuitry configured to
set, for at least one temporal phase of the plurality of temporal phases, a two- or three-dimensional region of interest in the ultrasound image data, the region of interest representing a portion of the tissue,
obtain movement information by a tracking process using the ultrasound images, wherein the movement information represents motion vectors of first points in the region of interest, and corresponds to a likelihood that when a first point is translated according to the motion vectors relative to positions within the respective ultrasound images, the positions within the respective ultrasound images refer to a same location on the target,
obtain a reliability index based on indicia of reliability of the movement information including at least one variable obtained from the tracking process,
determine, using the movement information, movement-based positions, which are first estimates of positions of the region of interest in ultrasound images corresponding to remaining temporal phases, which are temporal phases of the plurality of temporal phases other than the at least one temporal phase,
determine, using shape information of a shape of the tissue, shape-based positions, which are second estimates of the positions of the region of interest in the ultrasound images corresponding to the remaining temporal phases, the shape-based positions being determined by estimating the shape of the tissue in the remaining temporal phases and then determining the second estimates of the positions of the region of interest from the estimated shape of the tissue in the remaining temporal phases,
combine the movement-based positions with the shape-based positions by weighting the movement-based positions relative to the shape-based positions based on the reliability index, to generate position information of the region of interest, the weighting being performed such that, for a value of the reliability index indicating a greater reliability of the movement information, a contribution to the generated position information by the movement-based positions is increased relative to a contribution by the shape-based positions, and
track the region of interest using the position information of the region of interest by updating the region of interest with respect to time in accordance with changes of the region of interest represented by the position information.

US Pat. No. 10,371,829

X-RAY DETECTOR AND X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. An X-ray detector, comprising:a scintillator array in which a plurality of scintillators are arranged in a first direction and a second direction intersecting the first direction; and
a photodiode array including photodiodes, each of which is installed for a different one of the scintillators and each of which has an active area configured to convert visible light emitted by the scintillator into an electrical signal, wherein
the photodiodes in the photodiode array are arranged in such a manner that widths of the active areas in the first direction are equal to one another; and
widths of the active areas in the second direction increase from an end part of the photodiode array toward a center thereof.

US Pat. No. 10,492,764

ULTRASOUND DIAGNOSIS APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS, AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasound diagnosis apparatus configured to generate an ultrasound image, comprising:processing circuitry configured to
acquire a medical image that is different from the ultrasound image and accompanied by supplementary information indicating a site of a subject;
select a body mark corresponding to the site from a plurality of body marks; and
display the medical image, the selected body mark, and the ultrasound image together on a display, wherein
upon receipt of a change instruction to change one of the body mark and the medical image, the processing circuitry is further configured to newly select another of the medical image and the body mark to correspond to the one of the body mark and the medical image that has been changed, and
the processing circuitry is further configured to display the one of the body mark and the medical image that has been changed, the another of the medical image and the body mark newly selected, and the ultrasound image together on the display.

US Pat. No. 10,537,282

MEDICAL IMAGE PROCESSING APPARATUS, MEDICAL IMAGE DIAGNOSIS APPARATUS AND RECORDING MEDIUM

Canon Medical Systems Cor...

1. A medical image processing apparatus, comprising:a memory which stores volume data that includes a representation of a plurality of blood vessels connected to at least one of other blood vessels, and stores a plurality of target portions that are assigned for at least one of the plurality of blood vessels; and
processing circuitry configured to
extract the blood vessels from the volume data;
set a plurality of treatment orders for treating each of the plurality of target portions with a treatment;
simulate hemodynamics in the blood vessels when each of the target portions is treated in a first treatment order in the plurality of treatment orders:
simulate hemodynamics in the blood vessels when each of the target portions is treated in a second treatment order, different from the first treatment order, in the plurality of treatment orders; and
display a result comparing the simulated hemodynamics.

US Pat. No. 10,489,910

MEDICAL IMAGE PROCESSING APPARATUS, MEDICAL IMAGE PROCESSING METHOD AND MEDICAL IMAGE DEVICE

Canon Medical Systems Cor...

1. A medical image processing apparatus, comprising:tracking circuitry configured to perform tracking of a myocardium in a plurality of images containing the myocardium, the images being chronologically arranged;
receiving circuitry configured to receive an edit of a first position of the myocardium, from a user referring to a result of the tracking performed by the tracking circuitry; and
generating circuitry configured to generate, as guide information, a vector that indicates a difference between the first position of the myocardium before the editing and a second position of the myocardium after the editing, wherein the tracking circuitry is further configured to set a search range for the tracking, according to the generated guide information, to perform the tracking again.

US Pat. No. 10,456,593

RADIATION IRRADIATING APPARATUS AND RADIATION DOSE MANAGEMENT SYSTEM

Canon Medical Systems Cor...

1. A radiation irradiating apparatus comprising processing circuitry configured to:acquire a past cumulative dose distribution in a past radiation irradiation manipulation or a past cumulative dose distribution calculated based on past cumulative dose distributions in past radiation irradiation manipulations;
sequentially calculate a first cumulative dose distribution during executing a present radiation irradiation manipulation, the first cumulative dose distribution being a dose distribution cumulated in radiation exposures in a present radiation irradiation manipulation;
sequentially calculate a second cumulative dose distribution during executing the present radiation irradiation manipulation, the second cumulative dose distribution being generated by adding the first cumulative dose distribution to the past cumulative dose distribution; and
selectively display, on a display during executing the present radiation irradiation manipulation, the first and second cumulative dose distributions, or one of the first and second cumulative dose distributions.

US Pat. No. 10,371,772

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a gradient magnetic field power supply including an amplifier configured to amplify an input signal based on information of a gradient magnetic field waveform and output the amplified input signal to a gradient coil, a power supply device configured to supply power to the amplifier, and a capacitor bank configured to supply power, together with the power supply device, to the amplifier;
a voltmeter configured to measure a voltage of the capacitor bank;
storage circuitry to store a plurality of parameters of a circuitry model that is equivalent to the gradient coil, the parameters including a resistance value corresponding to a resistance element in the circuitry model, a mutual inductance corresponding to two coils that interact magnetically in the circuitry model, and a self-inductance in the coil itself in the circuitry model; and
processing circuitry configured to calculate frequency characteristics of an impedance of the gradient coil, based on a voltage variation of the capacitor bank measured by the voltmeter, adjust the parameters in the circuitry model, based on the calculated frequency characteristics of the impedance, and control imaging in accordance with the calculated frequency characteristics.

US Pat. No. 10,552,953

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:processing circuitry configured to
perform first magnetic resonance imaging to acquire multiple magnetic resonance signals that are used to derive a quantitative value of tissue;
derive the quantitative value of tissue based on the multiple magnetic resonance signals;
display, on a display, an input screen to accept inputs of parameter values of a plurality of imaging parameters to be used for second magnetic resonance imaging different from the first magnetic resonance imaging, the imaging parameters being classified into a first imaging parameter that has an effect on a contrast of an image to be acquired by performing the second magnetic resonance imaging and a second imaging parameter that has no effect on the contrast of the image;
generate an estimated image based on the derived quantitative value of the tissue and the input parameter values;
display, on the display, the estimated image together with the input screen and, when one of the input parameter values of the first imaging parameter that has the effect on the contrast of the image is changed, update the estimated image through a recalculation; and
acquire the image by performing the second magnetic resonance imaging based on the accepted parameter values.

US Pat. No. 10,390,773

X-RAY COMPUTED TOMOGRAPHY APPARATUS, A TOP-PLATE CONTROL APPARATUS, AND A TOP-PLATE CONTROL METHOD

Canon Medical Systems Cor...

1. An X ray computed tomography apparatus, comprising:a gantry including an X ray tube configured to generate X rays and an X ray detector configured to detect the X rays transmitted through a subject;
a bed arranged at a front surface side of the gantry and including a top plate configured to move toward an opening of the gantry;
input interface circuitry configured to receive input of an imaging plan concerning imaging of the subject; and
control circuitry configured to control the bed so that the top plate does not move to a back surface side of the gantry when the input interface circuitry receives the input of the imaging plan indicative of imaging a part of the subject inserted from the back surface side into the opening.

US Pat. No. 10,335,118

ULTRASONIC DIAGNOSTIC APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS, AND MEDICAL IMAGE PARALLEL DISPLAY METHOD

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus comprising:an ultrasonic probe including a plurality of transducers configured to perform ultrasonic scans, the ultrasonic probe being connected to a main body;
a display attached to the main body; and
processing circuitry configured to
preset diagnostic parameters before performing the ultrasonic scans, diagnostic parameters including a visual field depth and an azimuth angle,
generate a plurality of ultrasonic images based on outputs from the ultrasonic probe as a result of the ultrasonic scans,
set a first display layout or a second display layout selectively based on the visual field depth and the azimuth angle of the plurality of ultrasonic images, the first display layout being a layout laterally parallelly displaying the plurality of ultrasonic images and the second display layout being a layout vertically parallely displaying the plurality of ultrasonic images, and
cause the display to display the plurality of ultrasonic images in accordance with the preset diagnostic parameters and the set display layout, the processing circuitry being contained in the main body, wherein
the processing circuitry is configured to
automatically set the first display layout or the second display layout selectively in response to an input by a user to perform a switching operation to switch a number of ultrasonic images to be displayed on the display from one to a plural number, and
when an enlarged display instruction is input to enlarge, from a first magnification, part of one ultrasonic image of the plurality of ultrasonic images while the plurality of ultrasonic images are being displayed in accordance with the set display layout, and when an aspect ratio of a display area of the enlarged part of the one ultrasonic image exceeds a predetermined threshold, set the other layout that was not previously set, and display on the display the part of the one ultrasonic image and parts of other ultrasonic images corresponding to the part of the one ultrasonic image that are all enlarged at a same magnification that is greater than the first magnification.

US Pat. No. 10,485,500

X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:processing circuitry configured to
acquire a plurality of medical images, each including a region of interest, in chronological order,
identify two medical images among the plurality of medical images, a moving distance of the region of interest between the two medical images corresponding to a distance derived from a parallax angle, and
cause a display to display a stereoscopic image by displaying the identified two medical images.

US Pat. No. 10,467,798

RENDERING A GLOBAL ILLUMINATION IMAGE FROM A VOLUMETRIC MEDICAL IMAGING DATA SET

Canon Medical Systems Cor...

1. An image rendering apparatus, comprising:processing circuitry configured to
obtain a volumetric medical imaging data set representative of a region of a selected type of tissue;
associate one particular extinction color with the selected type of tissue;
determine, based on the one particular extinction color, a chromatic attenuation profile representative of color values as a function of both intensity and depth in the selected type of tissue, the chromatic attenuation profile including a plurality of points defined for a range of depths and a range of intensities and showing how a rendering of a homogeneous region of the selected type of tissue, having the one particular extinction color, would change in appearance with changes in the depth of the selected type of tissue as a result of illumination by a virtual light source;
display, to a user, the determined chromatic attenuation profile;
obtain, from the user, a modified color value for a particular point in the displayed chromatic attenuation profile, the particular point being determined by input from the user;
calculate a modified extinction color for the selected type of tissue based on the particular point and the obtained modified color value for the particular point in the displayed chromatic attenuation profile; and
render a global illumination image from the volumetric medical imaging data set using the modified extinction color.

US Pat. No. 10,441,229

X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. An X-ray CT apparatus comprising:a gantry equipped with an X-ray source and an X-ray detector;
a table on which an object is placed;
a bed including a moving mechanism which is configured to move the table in a horizontal direction and in a vertical direction; and
processing circuitry configured to
perform a main scan and a prescan, the prescan being performed prior to the main scan,
calculate displacement of the table in the vertical direction and an angle of the table from the horizontal direction using data acquired in the prescan, and
control a position of the table and an angle of the gantry based on the displacement of the table and the angle of the table.

US Pat. No. 10,390,801

ULTRASONIC DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus, comprising:an ultrasonic probe including a plurality of piezoelectric transducers, and configured to generate ultrasonic waves in response to supplied driving pulse signals;
at least one pulser configured to output a driving pulse signal to at least one of the plurality of piezoelectric transducers;
a plurality of power supplies implemented by circuitry and associated with the at least one pulser to apply voltages to the at least one pulser for generation of the driving pulse signal; and
a controller implemented by circuitry, configured to alternately select, at predetermined timing, application of the voltages from the plurality of power supplies in a push pulse transmission period in shear wave elastography during which push pulses are transmitted by the ultrasonic probe so as to prevent voltage droop in the voltages applied to the at least one pulser, wherein
one of more power supplies of the plurality of power supplies that are not selected for the application of the voltages apply no voltage to the at least one pulser.

US Pat. No. 10,383,583

X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. An X-ray Computed Tomography (CT) apparatus, comprising:processing circuitry configured to
adjust an image taking area of a subject by receiving an operation performed on a light projector provided on a gantry and set the adjusted image taking area as an image taking condition included in first image taking conditions, the gantry being configured to perform a CT image taking process on the subject with X-rays;
adjust the image taking area of the subject by receiving an operation from an operator via terminal equipment and set the adjusted image taking area as an image taking condition included in second image taking conditions; and
cause the gantry to perform an image taking process based on selection information selecting from between the first image taking conditions and the second image taking conditions as image taking conditions used for performing the image taking process on the subject.

US Pat. No. 10,481,229

MAGNETIC-RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic-resonance imaging apparatus, comprising:a gradient coil configured to apply a gradient magnetic field to an imaging space in which a subject is placed;
a transmitter coil configured to apply a RF (radio frequency) pulse to the imaging space; and
processing circuitry configured to calculate a target temperature of the gradient coil throughout a plurality of protocols to be executed in an examination of the subject, control a temperature of the gradient coil to approach the target temperature when data used to set a center frequency of the RF pulse is measured, generate image data based on MR signal data acquired by executing the plurality of protocols, and display an image based on the generated image data on a display.

US Pat. No. 10,463,324

PHOTON-COUNTING DETECTOR WITH COUNT-RATE DEPENDENT MULTIPLEXING

Canon Medical Systems Cor...

1. A photon-counting apparatus, comprising:a plurality of first photon-counting detectors configured to output photon-counting signals indicative of a number of photons impinging on the first photon-counting detectors;
a plurality of analog-to-digital conversion circuits, each configured to convert a respective one of the photon-counting signals into a digital photon-counting signal;
a processor configured to process the digital photon-counting signals to extract information from the digital photon-counting signals, the information including a photon-counting rate; and
an intelligent multiplexer including a first portion configured to form connections from outputs of the first plurality of photon-counting detectors to inputs of the plurality of analog-to-digital conversion circuits and a second portion configured to form connections from outputs of the plurality of analog-to-digital conversion circuits to inputs of the processor, the intelligent multiplexer being configured to, based on the photon-counting rate, modify the connections from the outputs of the first plurality of photon-counting detectors to the inputs of the plurality of analog-to-digital conversion circuits and to provide digital photon-counting signals for a set of the plurality of analog-to-digital converters to the processor based on the connections from the outputs of the plurality of analog-to-digital conversion circuits to the inputs of the processor,
wherein the intelligent multiplexer changes a number of the analog-to-digital conversion circuits connected to one first photon-counting detector of the plurality of photon-counting detectors based on the photon-counting rate.

US Pat. No. 10,463,327

X-RAY DIAGNOSTIC APPARATUS, MEDICAL IMAGE DIAGNOSTIC SYSTEM AND CONTROL METHOD

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:a couch including a couch top on which a subject lies;
an imaging unit including an X-ray generator configured to radiate X-rays to the subject, an X-ray detector configured to detect X-rays transmitted through the subject, and a holding device which movably holds the X-ray generator and the X-ray detector; and
processing circuitry configured to
generate an X-ray image of the subject, based on an output of the X-ray detector,
set a first interference determination area including a device projecting from the subject, based on an image of the device included in the X-ray image, and
control the holding device such that movement of the imaging unit is restricted in the first interference determination area.

US Pat. No. 10,459,047

MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT MAGNETIC FIELD POWER SUPPLY

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a gradient magnetic field power supply configured to supply power to a gradient coil, the gradient magnetic field power supply including
a plurality of switching circuits, each of which includes a plurality of switching elements, and is configured to output a predetermined pulse voltage by performing a switching operation of each of the switching elements; and
processing circuitry configured to switch an operation mode between a first mode and a second mode in accordance with an intensity of a voltage to be output to the gradient coil, the first mode causing switching circuits of a first number to perform the switching operation of each of the switching elements among the plurality of switching circuits, and the second mode causing switching circuits of a second number smaller than the first number to perform the switching operation of each of the switching elements among the plurality of switching circuits,
wherein the processing circuitry is further configured to switch the operation mode based on at least one of a duty ratio of the pulse voltage that is output from an operating switching circuit and a slew rate of a gradient magnetic field generated by the gradient coil.

US Pat. No. 10,453,184

IMAGE PROCESSING APPARATUS AND X-RAY DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. An image processing apparatus, comprising:processing circuitry configured to
identify a group of pixels corresponding to a particular blood vessel as an object of interest in medical image data;
determine pixels defining a particular cross-section projected correspondingly to a running direction of the particular blood vessel and selected from among a plurality of cross-sections having different directions, based on the group of pixels being projected onto each of the plurality of cross-sections having the different directions; and
perform noise reduction on the determined pixels defining the particular cross-section to obtain the determined pixels defining the particular cross-section having less noise.

US Pat. No. 10,444,305

MAGNETIC RESONANCE IMAGING APPARATUS AND SPECIFIC ABSORPTION RATE CALCULATION METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:a transmitter coil configured to generate a radio frequency magnetic field;
a receiver coil configured to receive a magnetic resonance signal generated by an object placed in an imaging space to which the radio frequency magnetic field is applied; and
processing circuitry configured to calculate a specific absorption rate by using a first correction coefficient which indicates a characteristic that is inherent to the transmitter coil and relates to generation of the radio frequency magnetic field, and a second correction coefficient which indicates a characteristic that the receiver coil has on the radio frequency magnetic field by electromagnetic coupling between the receiver coil and the radio frequency magnetic field during a generation period of the radio frequency magnetic field.

US Pat. No. 10,368,841

ULTRASOUND DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasound diagnostic apparatus, comprising:an abdominal schema selector that selects an abdominal schema from among abdominal schemas corresponding to different viewpoints, based on an angle of an ultrasonic probe put on an abdomen of a mother, wherein each of the abdominal schemas graphically represents an abdomen of the mother;
an ultrasonic image generator that generates an ultrasonic image based on a reflected wave signal received by the ultrasonic probe;
a specifier that specifies a position of the ultrasonic probe on the abdominal schema; and
a display controller that causes superimposed display of the ultrasonic image on the position on the abdominal schema.

US Pat. No. 10,485,519

ULTRASONIC DIAGNOSTIC APPARATUS, BIOLOGICAL SIGNAL ACQUISITION APPARATUS AND METHOD FOR CONTROLLING ULTRASONIC DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus comprising:an imaging system, having an ultrasonic probe, configured to acquire ultrasonic image data by transmitting and receiving an ultrasonic wave to and from an object;
a biological signal receiving system, having circuitry and a wireless equipment, configured to wirelessly transmit a transmission request of a biological signal of the object, receive the biological signal of the object wirelessly transmitted as a response to the transmission request, and output the received biological signal to a display, the transmission request being transmitted to a biological signal sensor; and
biological signal sensor control circuitry configured to wirelessly transmit a control value of a sample rate in the biological signal sensor to the biological signal sensor, the control value of the sample rate corresponding to a frame rate of ultrasonic image data which are being displayed.

US Pat. No. 10,488,484

MAGNETIC RESONANCE IMAGING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging method executed in a magnetic resonance imaging apparatus, comprising:applying an inversion pulse;
executing a subsequent imaging sequence including an RF (Radio Frequency) pulse and a gradient magnetic field concurrently applied with the RF pulse in a slice direction; and
performing, for a slice position selected by the RF pulse and the gradient magnetic field and during a time period including a null point, a plurality of data acquisitions in two-dimensional k-space, each of the plurality of data acquisitions being performed in an orientation that is within the two-dimensional k-space and that is different from one another including a center of the two-dimensional k-space.

US Pat. No. 10,485,493

MEDICAL IMAGE DIAGNOSIS SYSTEM

Canon Medical Systems Cor...

1. A medical image diagnosis system comprising:a gantry;
a rail disposed on a floor;
a rail cover that covers the rail;
an absorbing member formed between the floor and the rail cover; and
a carrier unit that is formed in a bottom of the gantry, is moved along the rail through a space between the rail and the rail cover, and along with movement, attaches and detaches the rail cover with respect to the floor via the absorbing member.

US Pat. No. 10,478,073

MEDICAL IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A medical image processing apparatus comprising:circuitry configured to
set a plurality of capture timings in one heartbeat of a heart based on cardiac phases, wherein a long time interval is set for a period in which movement of the heart is fast, and a short time interval is selected for a period in which movement of the heart is slow,
capture plurality of volume data at the plurality of capture timings,
extract at least two coronary artery centerline structures from the volume data,
generate a plurality of coronary artery centerline structures concerning other cardiac phases between the at least two specific cardiac phases in the one heartbeat by interpolating the plurality of coronary artery centerline structures based on the at least two extracted coronary artery centerline structures, and
calculate a plurality of displacement distributions representing a displacement at each point on the coronary artery centerline structure between respective cardiac phases of the plurality of cardiac phases, based on the plurality of coronary artery centerline structures at the phases in the one heartbeat.

US Pat. No. 10,468,128

APPARATUS AND METHOD FOR PRESENTATION OF MEDICAL DATA

Canon Medical Systems Cor...

1. A medical data presentation apparatus, comprising:processing circuitry; and
at least one display device,
wherein the processing circuitry configured to
obtain medical data relating to a patient or other subject, the medical data comprising a plurality of medical records;
display, on the at least one display device, at least some of the medical data on a first presentation panel of a plurality of presentation panels;
receive, from a user, a selection of at least one feature of the first presentation panel, the at least one feature of the first presentation panel relating to a first medical record of the plurality of medical records;
search at least one further presentation panel for a reference to the first medical record in the at least one further presentation panel; and
in response to the selection of the at least one feature and the searching of the at least one further presentation panel, highlight at least one feature on a second presentation panel of the at least one further presentation panel in which the reference to the first medical record is found, the second presentation panel having a different type of data presentation than the first presentation panel, and the highlighted at least one feature in the second presentation panel relating to the first medical record.

US Pat. No. 10,463,319

COMPRESSION PLATE, X-RAY DIAGNOSTIC APPARATUS AND METHOD OF MANUFACTURING THE COMPRESSION PLATE

Canon Medical Systems Cor...

1. A compression plate to compress a breast of a subject with the breast between the compression plate and an imaging plane of an imaging table, the compression plate comprising:a compression face configured to compress the breast to the imaging table; and
a chest wall face configured continuously from the compression face to be in contact with a chest wall of the subject during X-ray imaging,
wherein the chest wall face includes a second region which is in contact with the chest wall of the subject, and the second region has surface roughness which is greater than that of a first region of the compression face, which is opposed to the imaging table.

US Pat. No. 10,463,328

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus, comprising:memory circuitry to store therein a set of anatomical landmarks in a subject for each of a plurality of groups being different in detection granularity, the plurality of groups corresponding to at least two of position, organ, bone, blood vessel, and nerve of the subject; and
processing circuitry configured to
generate three-dimensional image data of the subject,
select one group of the plurality of groups based on set examination information and a type of scan to be performed,
detect, in the three-dimensional image data, a first target site, based on a first set of the anatomical landmarks corresponding to the first target site having been classified into the selected group,
detect, after detection of the first target site, in the three-dimensional image data, a second target site, based on a second set of the anatomical landmarks corresponding to the second target site having been classified into the selected group, and
output information indicating the detected first target site and the detected second target site,
wherein a number of the anatomical landmarks corresponding to the first target site is lower than a number of the anatomical landmarks corresponding to the second target site.

US Pat. No. 10,445,891

MEDICAL IMAGE PROCESSING APPARATUS AND METHOD

Canon Medical Systems Cor...

1. An apparatus comprising processing circuitry configured to:obtain medical imaging data that is representative of an anatomical region of a subject, the anatomical region comprising at least one anatomical feature of interest;
obtain a template that is representative of a desired view of the at least one anatomical feature of interest;register the medical imaging data and reference anatomical data to obtain a distribution of registration probability with respect to at least one registration parameter; andperform a selection process comprising:
obtaining a plurality of transforms, each having an associated registration probability;
for each of the plurality of transforms:
generating a respective view of the at least one anatomical feature of interest based on said transform; and
determining a template matching probability that represents a similarity of the generated view to the template; and
selecting at least one of the transforms and/or at least one of the views based on a combination of at least one of the registration probabilities with at least one of the template matching probabilities.

US Pat. No. 10,420,518

X-RAY COMPUTED TOMOGRAPHY IMAGING APPARATUS AND X-RAY TUBE APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography imaging apparatus comprising:an X-ray tube including a cathode configured to generate thermoelectrons, an anode configured to generate X-rays upon receiving the thermoelectrons from the cathode, and a regulator configured to apply an electric field or a magnetic field to focus or bias the thermoelectrons from the cathode;
an X-ray detector configured to detect the X-rays generated by the anode;
data acquisition circuitry configured to acquire data corresponding to the X-rays detected by the X-ray detector;
image generation circuitry configured to generate an image based on the acquired data;
a blocking member configured to retractably block an X-ray path from the X-ray tube to the X-ray detector; and
control circuitry configured to control the regulator to switch at least one of a size and a position of a focus of the thermoelectrons from the cathode on the anode between scan and warm-up, wherein
the control circuitry controls the blocking member to block the X-ray path during the warm-up, and to allow the X-rays to traverse the X-ray path during the scan.

US Pat. No. 10,368,821

IMAGE PROCESSING APPARATUS, MEDICAL IMAGE DIAGNOSTIC APPARATUS AND IMAGE PROCESSING METHOD

CANON MEDICAL SYSTEMS COR...

1. An image processing apparatus, comprisingprocessing circuitry configured to
obtain first volume data showing a morphological shape of a coronary artery supplying nutrition to a heart and second volume data showing cardiac function information, or obtain first volume data showing a morphological shape of a head blood vessel and second volume data showing brain function information, and
provide luminance information from the second volume data at a position of the coronary artery or the head blood vessel in the first volume data.

US Pat. No. 10,506,997

X-RAY DIAGNOSTIC APPARATUS

CANON MEDICAL SYSTEMS COR...

1. An X-ray diagnostic apparatus, comprising:a display;
a holding device including an X-ray irradiator, an X-ray detector, and a supporter that supports the X-ray irradiator and the X-ray detector;
a bed device available to place an object on;
a gesture detecting device configured to recognize a gesture of a person; and
processing circuitry configured to
identify a current step out of steps included in a manipulation, based on at least one of the display, the X-ray irradiator, the X-ray detector, the holding device, and the bed device,
determine an operation detail based on a combination of the identified step and the recognized gesture, and
operate at least one of the display, the holding device, the bed device, a speaker and a room light according to the determined operation detail.

US Pat. No. 10,488,479

MRI APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An MRI apparatus, comprising:a scanner equipped with at least a static magnetic field magnet configured to generate a static magnetic field, a gradient coil configured to apply gradient pulses, and an RF coil configured to apply RF pulses to an object and receive magnetic resonance signals from the object; and
processing circuitry configured to
set a pulse sequence in which a plurality of refocusing pulses are sequentially applied subsequent to application of one excitation pulse, and a predetermined number of magnetic resonance signals are acquired in each period between adjacent two refocusing pulses by using a water/fat separation method, in such a manner that the magnetic resonance signals are different in echo time TE for each of the plurality of refocusing pulses,
cause the scanner to perform the pulse sequence and acquire the magnetic resonance signals under the pulse sequence, and
generate a computed image from the magnetic resonance signals, the computed image being a magnetic resonance image of the object obtained by computation,
wherein the water/fat separation method is a plural-point Dixon method; and
the processing circuitry is further configured to
generate primary images by the predetermined number from the magnetic resonance signals acquired by the plural-point Dixon method which corresponds to the predetermined number,
generate a secondary image from the predetermined number of the primary images, the secondary image corresponding to at least one of a fat-suppressed image, a water-suppressed image, a water-fat image, and
generate the computed image from the secondary image.

US Pat. No. 10,463,329

X-RAY DIAGNOSTIC APPARATUS AND X-RAY DIAGNOSTIC METHOD

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:an X-ray tube configured to expose an X-ray toward an object;
an X-ray detector configured to acquire two X-ray detection data sets by counting X-ray photons in at least two X-ray energy bands depending on a K absorption edge of an X-ray absorber taken into the object, the X-ray photons having transmitted to the object; and
processing circuitry configured to:
input information to specify the X-ray absorber;
set the at least two X-ray energy bands based on the input information to specify the X-ray absorber; and
generate at least one frame of X-ray image data by data processing including subtraction processing of the two X-ray detection data sets, the X-ray absorber having been depicted in the at least one frame of X-ray image data,
wherein the processing circuitry is further configured to set a boundary between the at least two X-ray energy bands to be higher than an energy at the K absorption edge by a predetermined amount.

US Pat. No. 10,492,739

X-RAY CT DEVICE AND BED DEVICE

Canon Medical Systems Cor...

1. An X-ray CT device, comprising:a gantry including an X-ray tube configured to generate an X-ray, and a detector configured to detect the X-ray;
a top board configured to insert a subject into an opening section of the gantry; and
a movement mechanism configured to move the top board in a longitudinal direction,
wherein a position of the top board in a vertical direction at a position that intersects with a path of the X-ray is changed at substantially a same slope relative to a movement distance of the top board when the top board is moved in the longitudinal direction, so that acceleration that occurs on the top board in a vertical direction is reduced.

US Pat. No. 10,441,239

X-RAY DIAGNOSTIC APPARATUS, AND METHOD OF ADJUSTING IRRADIATION RANGE OF X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:a memory to store a program; and
processing circuitry configured to read the program from the memory, and execute the program,
wherein, by executing the program, the processing circuitry is configured to
identify two-dimensional vascular regions in corresponding X-ray images taken in at least two directions,
correct a size of each of the vascular regions on corresponding each of the X-ray images so as to have a corresponding size at a spatial position on a top table on which a patient is mounted,
identify a three-dimensional region of the patient at the spatial position on the top table based on the corrected vascular regions, and
adjust an X-ray irradiation range by controlling an X-ray diaphragm, or attenuate X-ray irradiation to a region other than the identified three-dimensional region by controlling a filter, based on the identified three-dimensional region and based on system position information that includes irradiation position information indicating where the patient is irradiated.

US Pat. No. 10,429,466

MRI APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An MRI apparatus, comprising:at least one receiving coil configured to receive magnetic resonance signals from an object; and
processing circuitry configured to
generate an image based on the received magnetic resonance signals,
calculate a weighting map of the image based on at least one of a sensitivity characteristic of the at least one receiving coil and a distance from a magnetic field center, and
generate a quantitative susceptibility image, which quantitatively indicates magnetic susceptibility inside a body, from the image by using the calculated weighting map,
wherein the processing circuitry is further configured to generate the quantitative susceptibility image from a phase image indicative of phase information of the image, by performing weighted optimization processing based on the weighting map.

US Pat. No. 10,660,189

X-RAY DIAGNOSIS SYSTEM AND ANODE-ROTATING COIL DRIVER

CANON MEDICAL SYSTEMS COR...

1. An X-ray diagnosis system comprising:an inter-capacitor terminal that is provided between two capacitors that are serially connected to each other;
a first inter-switching-element terminal that is provided between two first switching elements that are serially connected to each other;
a second inter-switching-element terminal that is provided between two second switching elements that are serially connected to each other; and
a third inter-switching-element terminal that is provided between two third switching elements that are serially connected to each other, wherein
the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply three-phase alternating current power, and the inter-capacitor terminal and two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply two-phase alternating current power.

US Pat. No. 10,660,190

X-RAY COMPUTED TOMOGRAPHY APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography apparatus comprising:an X-ray tube comprising a cathode configured to emit electrons, an anode configured to generate X-rays upon receiving the electrons from the cathode, and a deflector configured to deflect the electrons from the cathode;
a power supply configured to generate a tube voltage applied between the cathode and the anode; and
a tube voltage controller configured to modulate the tube voltage; and
focus size control circuitry configured to control a size of a focus formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during a period where the tube voltage is modulated by the tube voltage controller.

US Pat. No. 10,542,957

X-RAY COMPUTED TOMOGRAPHY APPARATUS AND GANTRY APPARATUS

Canon Medical Systems Cor...

1. An x-ray computed tomography apparatus, comprising a gantry apparatus that performs x-ray CT imaging, and a processing apparatus that controls the gantry apparatus, whereinthe gantry apparatus comprises:
a gantry housing that has a bore through which an object is inserted, and a scan mechanism for x-ray CT imaging;
at least one light projector that is provided in the gantry housing and configured to emit a visible light beam; and
a transmission film that is attached to an inner wall of the gantry housing that faces the bore, and allows the visible light beam emitted from the light projector to pass through,
the transmission film has a color in a wavelength band that allows the visible light beam to pass through and reduces visibility of inside of the gantry housing from outside, the wavelength band excluding a wavelength of a color of the visible light beam.

US Pat. No. 10,537,301

ULTRASOUND DIAGNOSIS APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasound diagnosis apparatus comprising:transmission and reception circuitry configured to generate reception signals corresponding to a plurality of channels, from reflected waves arranged to be received at a mutually same time by a plurality of transducer elements that transmitted an ultrasound wave, by controlling multiple transducer elements included in an ultrasound probe;
extracting circuitry configured to extract, prior to a beam forming process, first signals corresponding to the plurality of channels from the reception signals corresponding to the channels while suppressing signals originating from a tissue and to further extract a second signal by performing the beam forming process after suppressing, of the extracted first signals corresponding to the plurality of channels, a component in a predetermined direction;
calculating circuitry configured to calculate blood flow information from the second signal; and
controlling circuitry configured to generate a blood flow image from the blood flow information and to cause a display to display the generated blood flow image.

US Pat. No. 10,531,843

COUCH DEVICE, X-RAY CT APPARATUS, AND MEDICAL IMAGE DIAGNOSTIC APPARATUS

CANON MEDICAL SYSTEMS COR...

1. A couch device, comprising:a couchtop that includes a movable base couchtop and a transformable couchtop mounted above the movable base couchtop and capable of bending a part thereof from a flat shape;
shape control members configured to control a shape of the transformable couchtop; and
driving circuitry configured to move the couchtop to an opening of a gantry device that collects data used for taking a medical image; wherein
the transformable couchtop comprises a plurality of divided couchtops divided at a predetermined interval and a plurality of divided sections; the couchtop comprises a plurality of transformation support members to fix the transformable couchtop onto the movable base couchtop for each of the plurality of divided sections; and
each of the shape control members adjusts a position of a specific transformation support member among the plurality of transformation support members so that an installation location of the specific transformation support member is a fixed point relative to the movable base couchtop.

US Pat. No. 10,451,748

READOUT CIRCUIT FOR A SILICON PHOTOMULTIPLIER (SIPM) ARRAY USING CHARGE SHARING AND ANGER LOGIC

CANON MEDICAL SYSTEMS COR...

1. A gamma ray detector apparatus, comprising:a row of detector elements configured to generate, upon detecting a gamma ray, respective current pulses;
a chain of capacitors, each capacitor of the chain of capacitors arranged between electrodes of two adjacent detector elements of the row of detector elements;
a first high-pass filter having an input connected to a first end of the chain of capacitors and having an output connected to a first amplifier to generate a first output;
a second high-pass filter having an input connected to a second end of the chain of capacitors and having an output connected to a second amplifier to generate a second output; and
circuitry configured to perform Anger logic based on the first output and the second output, the Anger logic estimating one of a position along the row of detector elements and a detector element in the row of detector elements at which the current pulse originated.

US Pat. No. 10,451,568

PHOTON COUNTING X-RAY CT APPARATUS

Canon Medical Systems Cor...

1. A photon counting X-ray CT apparatus comprising:data acquiring circuitry configured to allocate energy measured by signals output from a photon counting detector in response to absorption of X-ray photons, the energy being allocated to respective first energy bins so as to acquire a first data group as count data of each of the first energy bins; and
processing circuitry configured to:
determine second energy bins obtained by grouping the first energy bins in accordance with a decomposition target material that is a material to be decomposed in a imaging region,
allocate the first data group to respective of the second energy bins so as to generate a second data group, and
use the second data group to generate an image representing a distribution of the decomposition target material, wherein
the processing circuitry determines the second energy bins so that a K absorption edge of the decomposition target material substantially coincides with a boundary between adjacent energy bins of the second energy bins,
the processing circuitry arranges the second energy bins at irregular intervals, and
the processing circuitry selects widths of the second energy bins based on each of integrated values of X-ray absorption rate corresponding to each of the second energy bins.

US Pat. No. 10,617,365

SYSTEM AND METHOD FOR MOTION ESTIMATION USING ARTIFICIAL INTELLIGENCE IN HELICAL COMPUTED TOMOGRAPHY

University of Central Flo...

1. A method for estimating and compensating for motion by reducing motion artifacts in an image reconstruction from helical computed tomography (CT) scan data of an object of interest, the method comprising:collecting helical computer tomography (CT) scan data of an object of interest, wherein the scan data is acquired using a radiation source to generate a cone beam and a radiation detector to detect the cone beam;
selecting a plurality of center-points along a trajectory of the radiation source;
identifying a plurality of pairs of sections along the trajectory of the radiation source, wherein each of the plurality of pairs of sections is associated with one of the plurality of center-points and wherein a first section of each of the pairs of sections and a second section of each of the pairs of sections are positioned on opposite sides of the center-point;
selecting a subset of the plurality of pairs of sections;
reconstructing, for each pair of the subset, a first partial image from the scan data of the first section and a second partial image from the scan data of the second section;
performing image registration of the first partial image and the second partial image for each pair of the subset to estimate a deformation that transforms the first partial image into the second partial image, wherein the deformation is representative of motion of the object of interest during the scan and wherein the image registration is performed using an artificial intelligence based method; and
generating a motion compensated image by reconstructing the object of interest using the scan data and the estimated deformation.

US Pat. No. 10,542,950

MEDICAL IMAGE DIAGNOSTIC APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS AND NON-TRANSITORY COMPUTER READABLE MEDIUM ON WHICH MEDICAL IMAGE PROCESSING PROGRAM HAS BEEN STORED

CANON MEDICAL SYSTEMS COR...

1. A medical image diagnostic apparatus, comprising processing circuitry configured to:generate medical volume data including bones and an organ;
identify, based on the volume data, the organ and an abnormal bone having an abnormal region of the bones;
calculate, based on the organ and the abnormal bone of the volume data, an influence rate on the organ by the abnormal bone; and
superimpose data indicating the influence rate on an image based on the volume data, thereby displaying the superimposed image on a display.

US Pat. No. 10,537,293

X-RAY CT SYSTEM, IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY METHOD

Canon Medical Systems Cor...

1. An X-ray CT system, comprising:processing circuitry configured to
acquire data by scanning, with X-rays, a subject placed on a patient table;
generate volumetric data based on the acquired data;
generate sectional images corresponding to an axial section, a sagittal section, and a coronal section based on the volumetric data so that the subject in each image is oriented in a preset standard direction regardless of an actual body position of the subject,
acquire body-position information corresponding to the actual body position of the subject,
determine, for each of the sectional images, necessity of a coordinate transformation, based on the actual body position and the preset standard direction in each of the sectional images,
apply the coordinate transformation to at least one of the sectional images for which it is determined that the coordinate transformation is necessary, so that the subject in the at least one of the sectional images is oriented in a direction corresponding to the actual body position, and
cause a display to display the sectional ages including at least one image to which the coordinate transformation is applied,
wherein the processing circuitry is further configured to specify a particular sectional image from among the sectional images according to an input from an operator, and determine the necessity of the coordinate transformation for only the specified image.

US Pat. No. 10,537,296

MEDICAL IMAGE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus comprising:a gantry having a bore along a vertical direction;
a plurality of columns that movably support the gantry along the vertical direction, with one end of the bore facing a floor surface and the gantry being interposed between the plurality of columns;
a plurality of gantry drive motors that move the gantry along the vertical direction;
a plurality of position detectors that detect a plurality of support positions at which the gantry is supported in each of the plurality of columns; and
gantry control circuitry that determines whether or not movement of the gantry along the vertical direction is possible, based on information regarding misalignment between the plurality of support positions.

US Pat. No. 10,499,871

X-RAY DIAGNOSTIC APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:processing circuitry configured to
acquire a plurality of first subtraction images in chronological order by respectively subtracting a plurality of contrast images obtained by radiographing a subject into which a contrast media has been injected and a non-contrast image,
acquire, at a radiography time different from a radiography time of the plurality of first subtraction images, a plurality of second subtraction images in chronological order by respectively subtracting a plurality of contrast images obtained by radiographing a subject into which a contrast media has been injected and a non-contrast image,
measure a first profile indicating a change in contrast media concentration over time in a region of interest including a blood vessel in the plurality of first subtraction images,
measure a second profile indicating a change in contrast media concentration over time in a region of interest in the plurality of second subtraction images corresponding to the region of interest in the plurality of first subtraction images,
determine a correction factor on the basis of the first profile and the second profile,
correct at least one of the plurality of first subtraction images and the plurality of second subtraction images on the basis of the correction factor determined, and
control so as to display information based on the plurality of first subtraction images and the plurality of second subtraction images that at least one thereof has been corrected on a display.

US Pat. No. 10,504,252

METHOD OF, AND APPARATUS FOR, REGISTRATION AND SEGMENTATION OF MEDICAL IMAGING DATA

Canon Medical Systems Cor...

1. An imaging data processing apparatus, comprising:processing circuitry configured to obtain a hierarchical registration between a reference data set and volumetric medical imaging data, the reference data set comprising a plurality of anatomical structures, wherein the obtaining of the hierarchical registration comprises
selecting, in the reference data set, a first anatomical structure or group of anatomical structures and a second, different anatomical structure or group of anatomical structures, wherein the first anatomical structure or group of anatomical structures is larger and/or more static than the second anatomical structure or group of anatomical structures;
performing a first registration to obtain a first rigid or affine transformation between a first subset of the reference data set comprising the first anatomical structure or group of anatomical structures and at least a first part of the volumetric medical imaging data;
segmenting the first anatomical structure or group of anatomical structures in the volumetric medical imaging data in dependence on the first registration;
performing a second registration to obtain a second rigid or affine transformation between a second subset of the reference data set comprising the second anatomical structure or group of anatomical structures and at least a second part of the volumetric medical imaging data, wherein the second rigid or affine transformation is obtained by refining the first rigid or affine transformation; and
segmenting the second anatomical structure or group of structures in the volumetric medical imaging data in dependence on the second registration, such that the first anatomical structure or group of anatomical structure and the second anatomical structure or group of structures are segmented in the volumetric medical Imaging data using different, successive registrations.

US Pat. No. 10,459,049

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:an RF coil apparatus configured to receive magnetic resonance signals by a plurality of coil elements corresponding to a plurality of channels, to modulate the magnetic resonance signals to have different frequencies for each of the channels, and to output an analog multiplexed signal in which the magnetic resonance signals with different frequencies are composited over the plurality of channels;
a receiver including analog-to-digital conversion circuitry configured to convert the analog multiplexed signal to a digital multiplexed signal, and including a predetermined number of separation channels configured to separate the digital multiplexed signal, based on a number of the channels relating to composition of the magnetic resonance signals with the different frequencies; and
processing circuitry configured to cause, if one or more separation channels among the predetermined number of separation channels are not used in a process of separation of the digital multiplexed signal, the receiver to stop the process of separation for the one or more separation channels.

US Pat. No. 10,451,699

IMAGE PROCESSING DEVICE AND MRI APPARATUS

Canon Medical Systems Cor...

15. An MRI apparatus, comprising:an RF coil configured to receive magnetic resonance signals under a water/fat separation method; and
processing circuitry configured to
reconstruct a water image and a fat image from the magnetic resonance signals under the water/fat separation method,
acquire a fat image obtained using the water/fat separation method of magnetic resonance imaging,
extract an inner wall image of a tubular structure out of the water image,
extract an outer wall image of the tubular structure out of the fat image, and
generate a tubular-structure wall image in which the tubular structure is distinguished, based on the extracted inner wall image and the extracted outer wall image.

US Pat. No. 10,448,916

X-RAY CT SYSTEM

Canon Medical Systems Cor...

1. An X-ray CT system comprising:a gantry including an X-ray tube, an X-ray detector configured to detect X-rays emitted by the X-ray tube, and an operation interface configured to generate a command signal to command a tilt movement of the gantry in accordance with an operation of an operator;
a first couch arranged in a first room;
a second couch arranged in a second room;
a carrier mechanism including a motor and configured to, when carrying the gantry to the first room, arrange the gantry in an orientation in which a front side of the gantry faces the first couch, and when carrying the gantry to the second room, arrange the gantry in an orientation in which a back side of the gantry faces the second couch; and
control circuitry configured to control a direction of the tilt movement of the gantry in accordance with a room where the gantry is arranged during generation of the command signal by the operation interface.

US Pat. No. 10,595,798

DETECTION APPARATUS AND DETECTION METHOD

Canon Medical Systems Cor...

1. A detection apparatus comprising:at least one first detector that detects a photon;
second detectors that detect a photon, a number of the second detectors being more than a number of the at least one first detector; and
processing circuitry configured to
receive a first signal from the at least one first detector and a second signal from the second detectors,
calculate a first counting rate by counting the number of pulses exceeding a first predetermined threshold value from the first signal,
calculate a second counting rate by counting the number of pulses exceeding a second predetermined threshold value from the second signal, and
generate output data based on one of the first counting rate and the second counting rate.

US Pat. No. 10,575,811

X-RAY DIAGNOSIS APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE DIAGNOSIS AIDING METHOD

TOHOKU UNIVERSITY, Senda...

1. An X-ray diagnosis apparatus comprising:processing circuitry configured:
to generate first subtraction image data using contrast image data and mask image data, each of the contrast image data and the mask image data being taken in a time series by using a first image acquisition condition with X-rays radiated in a first direction;
to generate second subtraction image data using contrast image data and mask image data, each of the contrast image data and the mask image data being taken, with X-rays radiated in a second direction, in a time series by using a second image acquisition condition that are substantially same as the first image acquisition condition;
to generate first color image data having pixels by using a first processing condition, each pixel of the first color image data having a color according to a temporal transition at a corresponding position of the first subtraction image data;
to generate, by using a second processing condition that is substantially same as the first processing condition, second color image data having pixels, each pixel of the second color image data having a color according to a temporal transition at a corresponding position of the second subtraction image data; and
to cause a stereoscopic image to be displayed on a basis of the first color image data and the second color image data.

US Pat. No. 10,564,245

RF COIL STORAGE DEVICE WITH MAGNETIC FIELD GENERATOR AND RF COIL DEVICE

Canon Medical Systems Cor...

1. An RF coil storage device configured to store an RF coil device, the RF coil device having a coil element and being configured to receive a magnetic resonance signal emitted from an object in response to an RF pulse transmitted from an RF transmitter included in an MRI apparatus, the RF coil storage device comprising:a storage rack on which the RF coil device is placed;
a magnetic field generator including a search coil, wherein the magnetic field generator is provided separately from the RF transmitter, a static magnetic generator, and a gradient magnetic generator of the MRI apparatus, and wherein the magnetic field generator radiates an RF magnetic field from the search coil to the coil element of the RF coil device, via a space without using a cable, to inspect frequency characteristics of each coil element of the RF coil device; and
processing circuitry configured to acquire an index signal to determine presence/absence of a failure, from the RF coil device placed on the storage rack,
wherein the processing circuitry is further configured to
acquire a transmitted wave transmitted from the coil element inside the RF coil device as the index signal, after radiation of the RF magnetic field, and
determine whether the failure exists in the RF coil device or not, based on the transmitted wave acquired as the index signal.

US Pat. No. 10,548,541

MEDICAL IMAGE DIAGNOSIS APPARATUS AND BED APPARATUS

Canon Medical Systems Cor...

1. A medical diagnostic apparatus comprising:a gantry;
a first frame that supports a table top, on which a subject is to be laid, so that the table top is movable in a longitudinal direction of the table top toward the gantry;
a second frame that supports the first frame, so that the first frame is movable in the longitudinal direction;
a support base equipped with an X link that supports the second frame, so that the second frame is movable in a vertical direction perpendicular to a floor surface; and
movement control circuitry that moves the first frame in the longitudinal direction based on operation information of a first shaft of the support base to correct a change in position of the first frame in the longitudinal direction in accordance with movement of the second frame in the vertical direction.

US Pat. No. 10,548,547

X-RAY COMPUTED TOMOGRAPHY APPARATUS

Canon Medical Systems Cor...

1. An X ray computed tomography apparatus, comprising:an annular rotating unit on which an X ray tube and an X ray detector are configured to be mounted;
a first frame configured to support the rotating unit so as to allow the rotating unit to rotate about a rotation axis;
a base stand configured to support the first frame from a floor surface;
a gantry arm coupled to the base stand and one of half portions of the first frame divided by a horizontal axis perpendicular to the rotation axis; and
a second frame coupled to the gantry arm and the other of the half portions of the first frame.

US Pat. No. 10,540,764

MEDICAL IMAGE CAPTURING APPARATUS AND METHOD

Canon Medical Systems Cor...

1. A medical image capturing apparatus comprising:image generation circuitry configured to generate three-dimensional (3D) image data of a subject by reconstructing projection data collected by main scanning;
detection circuitry configured to detect each of a plurality of parts of the subject in the 3D image data generated as a positioning image;
diagnosis support processing circuitry configured to execute diagnosis support processing corresponding to a predetermined part with regard to a region corresponding to the predetermined part of the subject detected by the detection circuitry in the 3D image data acquired by the main scanning;
setting circuitry configured to set an imaging condition of main imaging with respect to a part in which a lesion site is specified among the plurality of parts as a processing result of the diagnosis support processing circuitry; and
imaging control circuitry configured to control an imaging mechanism to perform imaging with regard to an imaging region including the part in which the lesion site is specified based on the imaging condition.

US Pat. No. 10,534,054

MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:sequence control circuitry configured to apply an MT (Magnetization Transfer) pulse over a plurality of slices under a gradient magnetic field and configured to apply, for each of the plurality of slices to which the MT pulse is applied, an RF pulse having a frequency corresponding to a resonance frequency of free water protons in each of the plurality of slices to perform multi-slice simultaneous data acquisition, wherein the sequence controlling circuitry applies the MT pulse over the plurality of slices such that each of relative values of frequencies of the MT pulse with respect to the resonance frequency of the free water protons is different for each of the plurality of slices.

US Pat. No. 10,531,854

X-RAY CT APPARATUS

CANON MEDICAL SYSTEMS COR...

1. An X-ray CT apparatus, comprising:an X-ray tube configured to radiate X-rays;
a voltage generator configured to apply voltage to the X-ray tube;
an X-ray detector configured to detect the X-rays; and
processing circuitry configured to,
control the voltage generator during helical scan to switch tube voltage to be applied to the X-ray tube, thereby causing an imaging to be performed separately with X-rays of a first energy and X-rays of a second energy different from the first energy, and generating first and second projection data sets of different imaging sections, respectively,
perform image reconstruction based on the first projection data set, thereby generating a first image,
generate a third projection data set based on the first image,
perform transformation processing to transform the second and third projection data sets into projection data sets corresponding to reference materials, and
perform image reconstruction based on the projection data set after the transformation processing, thereby generating reference material images corresponding to reference materials.

US Pat. No. 10,531,855

X-RAY COMPUTED TOMOGRAPHY APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography imaging apparatus comprising:an X-ray tube configured to generate X-rays;
an X-ray detector comprising a plurality of X-ray detection elements configured to detect X-rays;
an acquisition circuitry configured to acquire electrical signals from the plurality of X-ray detection elements and bundles the electrical signals in bundle units according to a resolution mode of the X-ray detector;
a high voltage generator configured to control a dose and a focus size of the X-ray tube; and
processing circuitry configured to determine a resolution mode, an application dose condition, and an X-ray exposure time for target CT imaging, and determine a focus size for the target CT imaging based on the determined resolution mode, application dose condition, and X-ray exposure time.

US Pat. No. 10,524,745

DATA ACQUISITION DEVICE, X-RAY CT APPARATUS, AND NUCLEAR MEDICINE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A data acquisition device comprisingprocessing circuitry configured to
compare a reference waveform with a waveform of a detection signal, the waveform of the detection signal being generated by detecting radiation, the reference waveform having a peak value that changes to correspond to an energy of the radiation and having a shape approximating a signal that, is output from a detector that detects the detection signal, and the radiation entering the detector through a subject and being detected by the detector, and
estimate information about the radiation, which enters the detector through the subject, in accordance with a comparison result between the waveform of the detection signal and the reference waveform for which the peak value approximates a peak value of the waveform of the detection signal.

US Pat. No. 10,524,753

X-RAY COMPUTED TOMOGRAPHY APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography apparatus comprising:an X-ray tube configured to generate X-rays;
an X-ray detector configured to detect X-rays generated from the X-ray tube and transmitted through an object;
a primary preprocessing circuitry configured to generate first projection data by executing primary preprocessing on data collected by the X-ray detector based on a primary preprocessing condition included in preprocessing conditions;
a secondary preprocessing circuitry configured to generate second projection data by executing secondary preprocessing on the first projection data based on a secondary preprocessing condition included in the preprocessing conditions;
a reconstruction processor configured to generate image data by executing reconstruction processing for the second projection data based on a reconstruction condition; and
control circuitry configured to cause a storage to store the first projection data in association with the primary preprocessing condition and the second projection data in association with the primary processing condition and the secondary processing condition, and to, after previous reconstruction processing is executed and when the first projection data and the second projection data are identified in the storage based on a designated preprocessing condition, read the second projection data, which is obtained later in a processing sequence than the first projection data, from the storage.

US Pat. No. 10,524,767

ULTRASOUND DIAGNOSTIC APPARATUS AND ULTRASOUND IMAGING METHOD

Canon Medical Systems Cor...

16. An ultrasound diagnostic apparatus, comprising:processing circuitry configured to
acquire, as a first data group, a plurality of pieces of ultrasound image data, each of the plurality of pieces of ultrasound image data being acquired at a different deflection angle, of a plurality of different deflection angles generated by first ultrasound scanning in a first mode in which the deflection angles for ultrasound transmission and reception are changed between a plurality of frames, the plurality of different deflection angles including a first deflection angle and each piece of ultrasound image data corresponding to a frame of the plurality of frames, acquire, as a second data group, first received signals, each of the first received signals corresponding to one of a plurality of reception scan lines, the first received signals being generated by second ultrasound scanning in a second mode in which the deflection angles for ultrasound transmission and reception are changed, and acquire, as a third data group, second received signals, each of the second received signals corresponding to one of the plurality of reception scan lines, the second received signals being generated by third ultrasound scanning in a third mode in which a plurality of reflected waves at the different deflection angles for ultrasound reception are received;
in the first mode, calculate first coefficients, each first coefficient corresponding to a spatial position of a plurality of spatial positions in a first piece of ultrasound image data and being separately calculated for each spatial position, of the acquired plurality of pieces of ultrasound image data, acquired at the first deflection angle, each of the first coefficients being calculated based on a signal value or a pixel value at a corresponding spatial position, of the plurality of spatial positions, in at least one of the acquired plurality of pieces of ultrasound image data acquired at a deflection angle, of the plurality of different deflection angles, other than the first deflection angle, and in the second and the third modes, calculate second coefficients, each second coefficient corresponding to one depth of a plurality of depths on a first reception scan line corresponding to the first deflection angle, each second coefficient being separately calculated for each one depth, the second coefficient being calculated based on a first signal value or a first pixel value at the one depth and being derived from the first received signals, when in the second mode, or the second received signals, when in the third mode, corresponding to at least one reception scan line, of the plurality of reception scan lines, having a deflection angle other than the first deflection angle;
in the first ultrasound scanning, multiply, by the first coefficients, second signal values or second pixel values corresponding to the plurality of spatial positions in the first piece of ultrasound image data corresponding to the first deflection angle, or third signal values or third pixel values corresponding to the plurality of spatial positions in a piece of image data that is obtained by compounding the plurality of pieces of ultrasound image data acquired at the plurality of different deflection angles including the first deflection angle, and in the second ultrasound scanning and the third ultrasound scanning, multiply, by the second coefficients, fourth signal values or fourth pixel values derived from the first received signals, when in the second mode, or the second received signals, when in the third mode, corresponding to the first reception scan line or a signal obtained by compounding the first received signals, when in the second mode, or the second received signals, when in the third mode, corresponding to the reception scan lines at the plurality of deflection angles including the first deflection angle, the fourth signal values or the fourth pixel values having values at the plurality of depths on the first reception scan line;
when the processing circuitry uses the first data group and at least one group of the second data group and the third group, (1) perform first multiplication, the first multiplication being multiplication of at least one of the data values in the first data group by at least one of the first coefficients, and/or (2) perform second multiplication, the second multiplication being multiplication of at least one of the data values in the at least one group by at least one of the second coefficients;
when the processing circuitry does not use the first data group and uses the second data group and the third data group are obtained, perform third multiplication, the third multiplication being multiplication of at least one of the data values in the at least one of the second data group and the third data group by at least one of the second coefficients;
when the processing circuitry uses the first data group, but does not perform the first multiplication, perform a compounding process on the first data group;
when the processing circuitry does not use the second data group, but does not perform the second multiplication nor the third multiplication, perform a compounding process on the second data group; and
when the processing circuitry uses the third data group, but does not perform the second multiplication nor the third multiplication on the third data group, perform a compounding process on the third data group.

US Pat. No. 10,507,338

PARTICLE BEAM RADIOTHERAPY SYSTEM

Canon Medical Systems Cor...

1. A particle beam radiotherapy system comprising:a gantry configured to apply particle beams to a subject;
an ultrasonic diagnostic apparatus configured to scan the subject with ultrasonic waves via an ultrasonic probe, and acquire an ultrasonic image concerning a radiotherapy target region of the subject;
processing circuitry configured to
specify a first planned point of a Bragg peak in the ultrasonic image, which anatomically coincides approximately with a second planned point of the Bragg peak determined using a radiotherapy planning apparatus, the first planned point and the second planned point being positioned so as to be included in the radiotherapy target region, and
estimate a sighting point of the Bragg peak of a particle beam applied by the gantry based on information concerning a body surface position of the subject and an actual range of the particle beam applied by the gantry; and
a display configured to display the ultrasonic image so as to indicate the first planned point and the sighting point.

US Pat. No. 10,499,868

X-RAY DIAGNOSTIC APPARATUS AND MEDICAL IMAGE DIAGNOSTIC SYSTEM

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:an imaging apparatus including an imaging system and a bed, the imaging system being configured to perform X-ray imaging of an object and being composed of an X-ray source, X-ray detector and a support portion supporting the X-ray source, the bed including a tabletop on which the object is placed;
processing circuitry configured to
accept an instruction to cause the imaging apparatus to perform an operation, the operation being movement of at least one of the imaging system, the bed and the tabletop, and
notify a content of the movement relating to the accepted instruction to a first user; and
permission input circuitry configured to accept information indicating permission of the movement from the first user who has confirmed the content of the movement,
wherein the processing circuitry is further configured to cause the imaging apparatus to perform the movement so as to more severely restrict the movement compared with after acceptance of information indicating permission of the movement by the permission input circuitry, until the acceptance of information indicating permission of the movement by the permission input circuitry.

US Pat. No. 10,504,229

MEDICAL IMAGE PROCESSING APPARATUS AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. A medical image processing apparatus, comprising processing circuitry configured to:extract position information of innervation from subject data;
convert a subject nerve region that is based on the extracted position information into atlas data;
analyze a position relation between a functional area in a brain in the atlas data and the converted subject nerve region; and
convert the analysis result into the subject data.

US Pat. No. 10,497,152

X-RAY CT APPARATUS AND RECONSTRUCTION PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An X-ray CT apparatus comprising:an X-ray tube configured to generate X-rays;
a photon counting detector including a plurality of detecting elements each configured to output a signal in response to any of the X-rays becoming incident thereto after having passed through an examined subject; and
processing circuitry configured to:
determine, within a reconstruction region, a first region on which a spectrum reconstructing process is to be performed and a second region on which an energy integral reconstructing process is to be performed, on a basis of output values related to energy spectra based on signals output by the detecting elements; and
generate an image on a basis of the determined first region and the determined second region.

US Pat. No. 10,481,231

MAGNETIC RESONANCE IMAGING APPARATUS AND IMAGE GENERATION METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:first processing circuitry configured to execute a pulse sequence in an acquisition pattern set such that reduction factors in a plurality of pieces of k space data are made different in accordance with a predetermined imaging parameter when the pieces of k space data having different values of the imaging parameter are acquired while changing the values of the imaging parameter; and
second processing circuitry configured to generate an image based on the pieces of k space data, wherein
when the imaging parameter is included in a first range, the first processing circuitry acquires the pieces of k space data in a first region including a center in a k space with a first reduction factor and acquires the pieces of k space data in a second region that differs from the first region with a second reduction factor that differs from the first reduction factor, and
when the imaging parameter is included in a second range that differs from the first range, the first processing circuitry acquires the pieces of k space data in the first region with a reduction factor higher than the first reduction factor and acquires the pieces of k space data in the second region with a reduction factor lower than the second reduction factor.

US Pat. No. 10,459,046

MAGNETIC RESONANCE IMAGING APPARATUS AND ARTIFACT SUPPRESSION METHOD THEREOF

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:a superconducting magnet configured to generate a static magnetic field;
a cryocooler configured to cool down the superconducting magnet in a refrigeration cycle in which mechanical fluctuation with a predetermined period is included;
a sequence controller configured to acquire first magnetic resonance (MR) signals for calculating correction data by executing a first pulse sequence, and acquire second MR signals from an object for generating a diagnostic image by executing a second pulse sequence after execution of the first pulse sequence; and
processing circuitry configured to
(a) calculate, as the correction data, first phase fluctuation or first frequency fluctuation included in the first MR signals, and
(b) perform an arithmetic operation using the correction data on the second MR signals to correct second phase fluctuation or second frequency fluctuation included in the second MR signals,
wherein the first and second phase fluctuations or the first and second frequency fluctuations are caused by periodic fluctuation of the static magnetic field caused by mechanical fluctuation of the cryocooler.

US Pat. No. 10,459,053

MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:sequence control circuitry configured to execute a first pulse sequence to acquire multiple sets of data with different echo times (TEs), the first pulse sequence being a pulse sequence of an ultrashort echo time (UTE) imaging technique and being a multi-echo pulse sequence; and
processing circuitry configured to derive a value of a TE (Echo Time) in a second pulse sequence executed by the sequence control circuitry based on the multiple sets of data.

US Pat. No. 10,448,912

IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An image processing apparatus, comprising:processing circuitry configured to
acquire a first image in which each pixel is expressed with a first gradation;
specify a partial region in the first image;
convert, based on correspondence information that associates each level of the first gradation with a display pattern of a plurality of pixels on a display, the level of the first gradation of each pixel included in the partial region in the first image into the corresponding display pattern, the display displaying the display pattern with a second gradation having fewer levels than the first gradation; and
generate a second image that expresses a plurality of first pixels included in the partial region of the first image as the converted display patterns.

US Pat. No. 10,444,308

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:processing circuitry configured to acquire information of an RF (radio frequency) coil, and
set a protocol to be applied to imaging using the RF coil, before performing the imaging; and
a display configured to display, when there are a plurality of protocols that can be selected as a protocol applied to the imaging, at least one protocol that is narrowed down from the protocols as a protocol applicable to the imaging based on the information of the RF coil, wherein the display displays the at least one protocol narrowed down from the protocols based on coil classification information in which the RF coil is classified according to imaging applications, wherein
the coil classification information includes priority information set based on a region that can be imaged by using the RF coil, and
when a plurality of RF coils are connected to an apparatus body, the display displays the at least one protocol narrowed down based on the priority information included in the coil classification information.

US Pat. No. 10,444,159

OPTICAL MEASUREMENT SYSTEM

Canon Medical Systems Cor...

1. An optical measurement system configured to perform optical measurement of a subject and to have an optical waveguide sensor chip mounted thereon, the optical waveguide sensor chip having a space for accommodating the subject, the space being defined by a plurality of surfaces including a first surface on which a functional layer is formed and along which an optical waveguide part is provided, the optical measurement system comprising:a holding device configured to hold a bottom surface of the optical waveguide sensor chip, the holding device including a first window and a second window arranged along the optical waveguide part of the optical waveguide sensor chip so as to be spaced apart from the first window;
a light transceiver configured to emit an incident light to be incident on the optical waveguide sensor chip through the first window, and receive output light that has passed through the first surface via the optical waveguide part from the second window;
processing circuitry configured to process the output light to acquire information on the subject; and
a plurality of contact sensors configured to detect whether all contact states are ON in two or more detection positions located along an array direction of the first window and the second window to provide detection results, wherein
the processing circuitry is further configured to determine that the bottom surface of the optical waveguide sensor chip is in contact with the holding device based on the detection results from the contact sensors,
the contact sensors are detection switches configured to be pressed down by the bottom surface of the optical waveguide sensor chip,
for each contact sensor of the plurality of contact sensors, a position of the contact sensor satisfies L for one of the plurality of contact sensors, the position of the contact sensor further satisfies M<(1?B(H/D)), M being a distance in the left-right direction between a center axis of the contact sensor and a left contact part, B being a distance in the left-right direction between a right contact part and the left contact part, and D being a height of the left contact part,
wherein the holding device includes:
the fixed holder;
the movable holder configured to hold the optical waveguide sensor chip against the fixed holder from two of four side surfaces of the optical waveguide sensor chip; and
a mechanism configured to bias the movable holder toward the fixed holder.

US Pat. No. 10,447,236

ULTRASONIC PROBE

Canon Medical Systems Cor...

1. An ultrasonic probe in which a plurality of piezoelectric vibrators are arrayed in both of an azimuth direction and an elevation direction, the ultrasonic probe comprising:a piezoelectric body configured to have a piezoelectric effect, wherein the piezoelectric body is divided into plural parts in both of the azimuth direction and the elevation direction, in such a manner that each of the plural parts of the piezoelectric body forms each of the plurality of piezoelectric vibrators; and
a matching layer configured to be laminated in an ultrasonic radiation direction of the piezoelectric body, wherein the matching layer is divided in the azimuth direction without being divided in the elevation direction;
a printed circuit configured to extract respective signals of the plurality of piezoelectric vibrators;
a surrounding electrode configured to be formed around the piezoelectric body so as to extend from an electrode, which is common to the plural piezoelectric vibrators on an ultrasonic radiation direction side, to an end of a surface of the piezoelectric body on a side opposite to the ultrasonic radiation direction side;
a plurality of signal electrodes configured to be formed on the piezoelectric body and to be connected to respective piezoelectric vibrators;
a grounding conductive body configured to be formed on an anterior surface of the printed circuit where the plurality of piezoelectric vibrators are arrayed and to be connected to the surrounding electrode; and
a plurality of signal electrodes configured to be formed on the anterior surface and to be connected to the signal electrodes,
wherein the printed circuit is further configured to
be integrally bonded to the plural piezoelectric vibrators on the anterior surface, and
be wired on a reverse surface of the printed circuit opposite to the anterior surface in such a manner that the respective signals of plural piezoelectric vibrators are separately extracted via the signal electrodes and through-holes, which are formed on the printed circuit and penetrate through the printed circuit.

US Pat. No. 10,656,225

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:a static magnetic field magnet;
a gradient coil that is provided on an inner circumferential side of the static magnetic field magnet;
a space forming structure forming a patient space on an inner circumferential side of the gradient coil;
a magnet supporting member supporting the static magnetic field magnet on a floor surface; and
a space forming structure supporter supporting the space forming structure,
wherein the space forming structure supporter is provided on a route of propagation, the route of propagation propagating solid propagation vibrations from the gradient coil to the space forming structure via the magnet supporting member.

US Pat. No. 10,634,690

AUTOMATIC ANALYZING APPARATUS

Canon Medical Systems Cor...

1. An automatic analyzing apparatus comprising:at least one reaction vessel configured to contain a solution mixture including reagent and sample causing a reaction;
a reaction table containing the at least one reaction vessel;
a mechanical unit to rotate the reaction table and stop the at least one reaction vessel at positions including a sample dispensing position, a reagent dispensing position, and a cleaning position;
a sample dispensing probe configured to aspirate a sample from a sample vessel and dispense the sample into the at least one reaction vessel in the reaction table at the sample dispensing position;
a reagent dispensing probe configured to aspirate a reagent from a reagent vessel and dispense the reagent into the at least one reaction vessel in the reaction table at the reagent dispensing position, wherein dispensing the reagent starts the reaction resulting in a solution mixture;
a cleaning probe configured to aspirate the solution mixture from the at least one reaction vessel in the reaction table at the cleaning position, wherein aspirating of the solution mixture stops the reaction in the solution mixture;
an analyzer mechanism configured to generate absorbance data by measuring the reaction of the solution mixture inside the at least one reaction vessel inside the reaction table at a detection position;
determination processing circuitry configured to:
determine that continuation of the reaction of the solution mixture is unnecessary if the absorbance exceeds a first predetermined value and/or an absorbance change of the solution mixture undergoing the reaction exceeds a second predetermined value, and
determine that the continuation of the reaction of the solution mixture is necessary if the absorbance of the solution mixture undergoing the reaction is equal to or below the first predetermined value and/or the absorbance change of the solution mixture undergoing the reaction is equal to or below the second predetermined value; and
control processing circuitry configured to:
control a mechanical unit to rotate the reaction vessel containing the solution mixture and stop the reaction vessel at positions including the cleaning position;
control the analyzer mechanism to, if during a first round the determination processing circuitry determines that the continuation of the reaction of the solution mixture is unnecessary, generate the analytical data by measuring the solution mixture in the first round and after the determination by the determination processing circuitry and to generate the analytical data by measuring the solution mixture in a second round after the first round if throughout all of the first round the determination processing circuitry determines that the continuation of the reaction of the solution mixture is necessary, wherein the first round is a period of time for the reaction vessel to be initially cleaned at a first cleaning position, rotated from the first cleaning position, injected with the solution mixture, determine absorbance of the solution mixture by the determination processing circuitry, and be set in the cleaning position for a second time, and the second round is a period of time for the reaction vessel at completion of the first round to be rotated from the cleaning position again without being cleaned, determine absorbance of the solution mixture by the determination processing circuitry, and be set in the cleaning position for a third time, wherein the determining the absorbance of the solution mixture is executed between each cleaning position; and
control a cleaning nozzle to, if during the first round the determination processing circuitry determines that the continuation of the reaction of the solution mixture is unnecessary, after determining the absorbance of the solution mixture executed between each cleaning position, clean the reaction vessel containing the solution mixture in the first round and after the determination by the determination processing circuitry, and not to clean the reaction vessel containing the solution mixture in the first round if throughout all of the first round the determination processing circuitry determines that continuation of the reaction of the solution mixture is necessary.

US Pat. No. 10,636,515

MEDICAL OR HEALTH INFORMATION SEARCH SUPPORT APPARATUS AND MEDICAL OR HEALTH INFORMATION SEARCH SUPPORT SYSTEM

Canon Medical Systems Cor...

1. A medical or health information search support apparatus comprising:an input device to which a search keyword for searching for medical or health information of search target is inputted; processing circuitry configured to
search an administration information database that stores administration information by the search keyword, the administration information including respective prescription-treatments for respective patients, and each of the prescription-treatments being associated with a disease name for which the prescription-treatment was prescribed, and acquire related disease names for the search keyword based on a degree of relatedness between the disease names in the administration information, the degree of relatedness being obtained using a numerical difference between values of classification codes; and
search for medical or health information stored in a medical or health information database on the basis of the search keyword and a related disease name that is related to the search keyword based on the degree of relatedness; and
a display configured to display the medical or health information thus searched out, wherein,
the processing circuitry is further configured to determine a display level indicating a range of related disease names to be displayed by the display among the generated related disease names based on the degree of relatedness, the display level being selected from a first display level and a second display level, the first display level including the related disease names for which numerical differences between a value of a classification code of the search keyword and respective values of classification codes of the related disease names are below a first threshold, and the second display level including the related disease names for which numerical differences between the value of the classification code of the search keyword and the respective values of the classification codes of the related disease names are below a second threshold, wherein the first threshold is greater than the second threshold,
the display displays the acquired medical or health information of the related disease names as well as the medical or health information of the search keyword, and
when a disease name is input as the search keyword, the degree of relatedness used to determine the related disease name is based on a prescription-treatment of the related disease being substantially the same as the prescription treatment associated with the disease name inputted as the search keyword.

US Pat. No. 10,631,797

X-RAY DIAGNOSIS APPARATUS AND CONTROL METHOD

Canon Medical Systems Cor...

9. A control method, comprising:generating a sequence of images in a time-series manner based on a signal outputted from an X-ray detector detecting an X-ray irradiated by an X-ray tube and transmitted through a subject during a one period of a heartbeat of the subject;
detecting a position of a tip of a catheter, which moves due to the heartbeat of the subject, in each of the sequence of images;
storing, in a memory, transfer trace information including the detected position of the tip of the catheter in each of the sequence of images;
creating tip trace data representing positions of the tip at a plurality of time points during the period of the heartbeat by generating a curve or a closed loop by tracing positions of the detected tip of the catheter based on the stored transfer trace information of the tip of the catheter, the tip trace data representing the curve or the closed loop;
superimposing the generated curve or the closed loop onto present image data to create support data; and
displaying the support data on a display.

US Pat. No. 10,617,368

X-RAY COMPUTED TOMOGRAPHY APPARATUS AND BED DEVICE

Canon Medical Systems Cor...

1. An X-ray computed tomography apparatus comprising:a gantry including an X-ray tube and an X-ray detector;
a top support portion configured to support a top, on which an object is placed, so as to allow the top to move in a longitudinal direction of the top;
a first driving controller configured to move the top in the longitudinal direction;
a second driving controller configured to move the top support portion in the longitudinal direction; and
control circuitry configured to execute at least one of a start operation and a stop operation, the control circuitry being configured to control, for a start operation, the second driving controller to accelerate the top support portion along a forward direction before moving the top when starting to move the object in a scan after positioning the top support portion at a moving start position decided based on a condition for the scan and control the first driving controller to accelerate the top to a set speed along the forward direction after lapse of a first predetermined time since start of acceleration control on the top support portion by the second driving controller, and the control circuitry being configured to control, for a stop operation, the second driving controller to accelerate the top support portion along the forward direction when decelerating the top and control the first driving controller to stop the top after lapse of a second predetermined time since start of acceleration control on the top support portion by the second driving controller.

US Pat. No. 10,595,811

X-RAY COMPUTED TOMOGRAPHY APPARATUS

Canon Medical Systems Cor...

1. An X-ray computed tomography apparatus comprising:a gantry main body equipped with an X-ray tube and an X-ray detector;
a base configured to tiltably support the gantry main body;
a first support frame configured to support a table top, on which a subject is placed, such that the table top is movable in a longitudinal direction;
a second support frame configured to support the first support frame such that the first support frame is movable in the longitudinal direction; and
gantry control circuitry configured to control a tilt of the gantry main body, a movement of the table top by the first support frame, and a movement of the first support frame by the second support frame, and configured to execute switching between a first tilt mode in which the gantry main body is tiltable in a first angle range and a second tilt mode in which the gantry main body is tiltable in a second angle range in which a tilt angle is greater than in the first angle range.

US Pat. No. 10,595,725

MAGNETIC RESONANCE IMAGING APPARATUS AND METHOD

Canon Medical Systems Cor...

2. A magnetic resonance imaging apparatus comprising:processing circuitry configured to
collect data of an imaging area of a subject over a plurality of time phases within a certain respiratory cycle of the subject after applying a labeling pulse to a labeling area in which cerebrospinal fluid flows under a task of respiration; and
generate images of a plurality of time phases depicting the cerebrospinal fluid by using collected data, wherein
the processing circuitry collects first data of the entire k-space for one time phase within a first respiratory cycle and collects second data in a low frequency region of the k-space over the time phases within a second respiratory cycle that is different from the first respiratory cycle, wherein the first respiratory cycle and the second respiratory cycle are periods in which respiration of the subject fluctuates in accordance with the task of respiration; and
the processing circuitry generates the images of the time phases by combining data in a high frequency region included in the first data of the entire k-space for one time phase collected within the first respiratory cycle and the second data in the low frequency region in each time phase collected within the second respiratory cycle.

US Pat. No. 10,595,389

X-RAY HIGH VOLTAGE GENERATOR, X-RAY IMAGING APPARATUS, ASSESSING CIRCUIT, AND MEDICAL POWER SUPPLY DEVICE

Canon Medical Systems Cor...

1. An X-ray high voltage generator comprising:an inverter circuit configured to control output voltage to be output to an X-ray tube configured to generate an X-ray;
a power device that is provided for the inverter circuit and is configured to perform a switching process to control the output voltage;
a Pulse Width Modulation (PWM) circuit configured to control the switching process performed by the power device on a basis of an ON time period in accordance with the output voltage; and
processing circuitry configured to output information about a product life of the power device on a basis of the ON time period.

US Pat. No. 10,575,817

ULTRASOUND DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. An ultrasound diagnosis apparatus configured to transmit ultrasound waves to an inside of a subject from a plurality of transducers, each corresponding to one of a plurality of channels, and receive, by the transducers, reflected waves generated in the subject, the apparatus comprising:a control circuit configured to control channels used to transmit the ultrasound waves and channels not used to transmit the ultrasound waves, among the plurality of channels; and
a receiving circuit configured to receive the reflected waves, wherein the receiving circuit includes
a preamplifier configured to amplify the reflected waves, and
an impedance control circuit located on an upstream side of the preamplifier and configured to set line impedance in a transmitting period, in which the ultrasound waves are transmitted from the transducers to the inside of the subject, to be lower than that in a receiving period, in which the reflected waves are received by the transducers.

US Pat. No. 10,575,826

ULTRASOUND DIAGNOSTIC APPARATUS AND ULTRASOUND IMAGING METHOD

Canon Medical Systems Cor...

10. An ultrasound imaging method including:performing, by a transmitter and a receiver, a first set of ultrasound transmission and reception and a second set of ultrasound transmission and reception, on a same scanning line of an imaging region of a subject administered with a contrast agent, for a plurality of sets, to output reflected wave data for the plurality of the sets,
the first set of the ultrasound transmission and reception performing amplitude-modulated or amplitude- and phase-modulated ultrasound transmission transmitted a plurality of times and receiving reflected waves, and
the second set of the ultrasound transmission and reception being transmission and reception at least whose phase modulation being different from phase modulation of the first set of the ultrasound transmission and reception;
adding or subtracting, by an adder or a subtractor, respectively, the reflected wave data for the plurality of the sets and outputting a result of the added or subtracted reflected wave data as data;
generating, by an image generating unit, contrast image data based on the data output from the adder or subtractor, wherein
each transmission of the first set of ultrasound transmission and reception and each transmission of the second set of ultrasound transmission and reception are performed alternately; and
when performing alternately four or more sets in total including the first set of ultrasound transmission and reception and the second set of ultrasound transmission and reception, inverting transmission polarities between the first set of the ultrasound transmission and reception of an odd number of times and the first set of the ultrasound transmission of an even number of times, and inverting transmission polarities between the second set of the ultrasound transmission and reception of an odd number of times and the second set of the ultrasound transmission and reception of an even number of times.

US Pat. No. 10,561,381

MEDICAL IMAGE DIAGNOSTIC APPARATUS, AND MEDICAL IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus comprising:an imaging apparatus configured to acquire medical images of an object at respective time phases;
a memory circuit;
a display; and
processing circuitry configured to
detect respective positions of a treatment device in the medical images,
acquire biological information from the medical images,
compute biological indexes, each of which indicates degree of a treatment effect, for the respective time phases based on the biological information,
cause the memory circuit to store the biological indexes and the respective positions of the treatment device in the medical images in such a manner that each biological index is associated with a position of the treatment device in a medical image, from which the biological information corresponding to the each biological index is acquired, for the respective time phases, and
cause the display to display each position of the treatment device and a biological index associated with the each position of the treatment device.

US Pat. No. 10,557,910

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:processing circuitry configured to repeatedly execute a pulse sequence a first number of times, the pulse sequence including a tag pulse used for labeling a fluid flowing into an image taking region of a patient followed by a plurality of data acquisition processes, wherein
the processing circuitry acquires during each of a first plurality of the data acquisition processes three-dimensional data corresponding to one region by using a three-dimensional sequence, and
the processing circuitry acquires during each of a second plurality of data acquisition processes two-dimensional data corresponding to the one region by using a two-dimensional sequence,
a first time difference between respective beginning times of the first plurality of data acquisition processes being longer than a second time difference between beginning times of the second plurality of data acquisition processes.

US Pat. No. 10,552,940

MEDICAL IMAGE DIAGNOSTIC APPARATUS FOR ENLARGING AND RECONSTRUCTIVE IMAGE PORTIONS

Canon Medical Systems Cor...

1. A medical image diagnostic apparatus, comprising:a display; and
processing circuitry configured to
acquire data concerning an interior of an object,
reconstruct a first image concerning the object based on the acquired data,
display the reconstructed first image in a display area of the display,
enlarge a portion of the first image in the display area in accordance with an enlargement ratio set by an enlarging operation by an operator, and
in response to the enlargement ratio exceeding a predetermined value,
determine, as an enlargement reconstruction range, an area of the enlarged portion of the first image displayed in the display area,
reconstruct a second image corresponding to the determined enlargement reconstruction range based on a subset of the acquired data, and
display the reconstructed second image in the display area.

US Pat. No. 10,531,861

ULTRASONIC DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. An ultrasound diagnosis apparatus, comprising:an ultrasound transceiver configured to
change a transmission direction of ultrasound waves, and
transmit the ultrasound waves continuously or repeatedly at predetermined intervals, the ultrasound waves being transmitted in a direction set while the ultrasound transceiver is inserted and placed in an esophagus of a subject to acquire biological information including a Doppler signal indicating blood flow information of an observation site of the subject, the observation site being heart of the subject; and
a controller configured to
obtain a direction toward the observation site based on a signal strength of the Doppler signal or a measured waveform pattern of the Doppler signal, and
control, based on the obtained direction, the ultrasound transceiver being inserted and placed in the esophagus to adjust the transmission direction of ultrasound waves to be the obtained direction.

US Pat. No. 10,527,696

MAGNETIC RESONANCE IMAGING APPARATUS AND SAR COMPUTING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a static magnetic field generator configured to generate a static magnetic field;
a gradient magnetic field generator configure to generate a gradient magnetic field;
a transmission coil configured to apply a radio frequency (RF) pulse to an object; and
processing circuitry configured to
correct an unloaded high frequency pulse power absorbed by other than the object with a volume of the object and a body fat percentage of the object to generate corrected high frequency pulse power,
determine a determined high frequency pulse power by subtracting the corrected high frequency pulse power from a loaded high frequency pulse power, and
compute a specific absorption rate (SAR) by dividing the determined high frequency pulse power by a weight of the object.

US Pat. No. 10,521,912

IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An image processing apparatus comprising:processing circuitry configured to
acquire pieces of change information indicating temporal changes in computed tomography (CT) values of a myocardium and a right ventricular of a subject based on a plurality of chronologically consecutive images that are generated by an X-ray CT apparatus by scanning the subject to which a contrast agent is administered; and
correct the piece of change information on the myocardium based on the piece of change information on the right ventricular.

US Pat. No. 10,492,687

MAGNETIC RESONANCE IMAGING APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An image processing apparatus, comprising:processing circuitry configured to
perform control to display a matrix that includes first cells each identifying a gyrus and second cells each indicating connectivity between the gyri, the first cells being arranged along a first axis in the matrix;
wherein, in accordance with an operation to select at least one cell of the first cells, the processing circuitry is further configured to perform the control so as to display information regarding a localized region corresponding to the selected cell.

US Pat. No. 10,444,317

MAGNETIC RESONANCE IMAGING APPARATUS AND MEDICAL PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:sequence control circuitry that performs first scanning in a first acquisition direction along one radial direction in k-space, crossing over an origin in the k-space, performs second scanning in a second acquisition direction opposite to the first acquisition direction along the radial direction, crossing over the origin, and performs third scanning related to filling of magnetic resonance signals in the k-space; and
processing circuitry that generates a first projection image by applying a one-dimensional Fourier transform with respect to the radial direction to a first magnetic resonance signal acquired by the first scanning, generates a second projection image by applying the one-dimensional Fourier transform to a second magnetic resonance signal acquired by the second scanning, determines correction coefficients related to transient response characteristics of a readout gradient magnetic field by a calculating process to reduce a difference between the first projection image and the second projection image, and generates a corrected image in which the transient response characteristics are corrected using the correction coefficients and the magnetic resonance signal acquired by the third scanning.

US Pat. No. 10,420,534

ULTRASONIC DIAGNOSTIC DEVICE, IMAGE PROCESSING DEVICE, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasonic diagnostic device, comprising:an ultrasonic probe configured to collect volume data by three-dimensionally scanning a subject with ultrasonic waves; and
processing circuitry configured to
generate a first rendering image based on the volume data collected by the ultrasonic probe, by using a first rendering method, the first rendering method including rendering the volume data by global illumination;
generate a second rendering image based on the volume data, by using a second rendering method that is different from the first rendering method;
generate a superimposed image in which at least a part of the first rendering image and a part of the second rendering image are superimposed on each other;
cause a display to display the superimposed image;
determine whether the superimposed image is suitable for observation based on a luminance value of the superimposed image; and
adjust so as to increase a superimposition ratio of the first rendering image or the second rendering image in the superimposed image, when it is determined that the superimposed image is not suitable for observation.

US Pat. No. 10,768,258

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprisingprocessing circuitry configured to
perform at least one of first data collection and second data collection, wherein the first data collection collects a plurality of first data by collecting data of an imaging region of a subject at a plurality of different times with predetermined time intervals after a tag pulse is applied to fluid flowing into the imaging region, and the second data collection collects a plurality of second data by collecting data of the imaging region at a plurality of different times with the predetermined time intervals by differing at least one of application or non-application of the tag pulse and a position of the applying in the first data collection; and
generate a plurality of first images respectively corresponding to a plurality of particular times of the plurality of different times from at least one of the first and second data collected at the particular times by performing phase correction for the at least one of the first and second data collected at the particular times, using phase data included in the first or second data, wherein the phase data is data collected at a timing when a longitudinal magnetization of the fluid is a positive value, and collected at a time other than the particular times.

US Pat. No. 10,758,199

X-RAY DIAGNOSTIC APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:an X-ray generator configured to irradiate a plurality of X-rays to a subject;
an X-ray detector configured to detect the plurality of X-rays;
processing circuitry configured to
generate a first plurality of X-ray images chronologically based on the plurality of X-rays that have passed through the subject into which a contrast media is injected, and that have been detected by the X-ray detector,
calculate, for the first plurality of X-ray images, a differential value obtained by subtracting a pixel value in a region of a latter image from a pixel value in a region of a former image in chronologically sequential two images, respectively,
extract, from the first plurality of X-ray images, a second plurality of X-ray images subsequent to the latter image for which the calculated differential value is a positive value,
extract a first image from among the second plurality of X-ray images, the first image being a former image in which the calculated differential value is equal to or smaller than a threshold, and
sequentially generate a plurality of emphasized images by sequentially performing trace processing or signal averaging processing on two or more X-ray images from the latter image for which the calculated differential value is the positive value to the first image in reverse chronological order; and
a display configured to display the plurality of emphasized images in order in which the plurality of emphasized images were generated.

US Pat. No. 10,709,351

MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC RESONANCE IMAGING METHOD AND MAGNETIC RESONANCE IMAGING SYSTEM

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a display configured to display at least a locator image and a reference image;
an input interface configured to set a region of interest on the locator image displayed on the display; and
processing circuitry configured to
obtain three dimensional data of a subject,
generate the locator image from the three dimensional data and display the locator image on the display,
generate the reference image corresponding to the location of the region of interest and display the reference image on the display,
when the reference image is zoomed in or zoomed out by the input interface, adjust the size of the region of interest being set on the locator image so as to correspond to an area of the reference image, the area being displayed by the display after the reference image has been zoomed in or zoomed out, and,
when the region of interest being set on the locator image is increased or reduced by the input interface, zoom in or zoom out the reference image so as to correspond to the region of interest having been increased or reduced.

US Pat. No. 10,632,461

CHEMICAL CONTAINER

Canon Medical Systems Cor...

1. A chemical container comprising:a plate;
a flexible sheet-like member including a bonding area fixedly bonded to the plate, the bonding area defining (1) a first compartment and (2) an outflow passage communicating with the first compartment via an opening of the first compartment; and
a first seal portion located in the first compartment and manufactured to be weakly bonded to the plate compared to the bonding area so as to initially close the opening using the sheet-like member, the first seal portion defining an area protruding from the opening toward the first compartment, and the first seal portion blocking communication between (a) the first compartment and (b) the outflow passage when the first seal portion is weakly bonded to the plate,
wherein the first seal portion is operable to peel off from the plate by an increase in an internal pressure of the first compartment that deforms the first compartment, and
wherein a second passage is defined by a bonding area where the sheet-like member is fixedly bonded onto the plate so as to communicate with the first compartment,
the chemical container further comprising:
a feeding port portion through which a content is fed to the first compartment via the second passage;
a first closing cap configured to close the feeding port portion in an openable manner;
a discharge port portion configured to communicate with the second passage to discharge the content in the first compartment; and
a second closing cap configured to close the discharge port portion in an openable manner,
wherein the first and second closing caps close the feeding port portion and the discharge port portion to close a container space comprising the first and second passages.

US Pat. No. 10,634,774

ULTRASOUND DIAGNOSIS APPARATUS AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An ultrasound diagnosis apparatus, comprising:processing circuitry configured to:
receive noise data with respect to each scan line by an ultrasound probe that is in a state that does not transmit ultrasound waves;
acquire raster data with respect to each scan line by the ultrasound probe transmitting ultrasound waves with respect to each scan line, a frame of an ultrasound image data comprising the raster data corresponding to each of a plurality of scan lines; and
subtract, from the raster data, the noise data corresponding to the scan line of the raster data over a plurality of frames, the noise data being repeatedly used over the plurality of frames.

US Pat. No. 10,631,806

X-RAY DIAGNOSTIC APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus generating an X-ray image in a region of interest, comprising:a radiography device configured to take a first X-ray image before injection of a contrast medium, take a second X-ray image after the injection of the contrast medium and before a thrombectomy is performed, and take a third X-ray image after the injection of the contrast medium and after the thrombectomy is performed; and
processing circuitry configured to generate an output image having pixel values that are ratios of (1) a difference between pixels values of the second X-ray image and the first X-ray image, and (2) a difference between pixel values of the third X-ray image and the first X-ray image.

US Pat. No. 10,624,608

ULTRASONIC DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus, comprising:transmission/reception circuitry configured to transmit/receive an ultrasonic wave to/from an object via a piezoelectric transducer;
ultrasonic image generation circuitry configured to generate a series of color Doppler images along a time series based on an output from the transmission/reception circuitry and generate a Doppler waveform image based on an output from the transmission/reception circuitry;
specifying information generation circuitry configured to generate a maximum flow velocity time corresponding to a maximum flow velocity value in a Doppler waveform on the Doppler waveform image;
selection circuitry configured to select a color Doppler image corresponding to the maximum flow velocity time from the series of color Doppler images based on generation of the maximum flow velocity time in response to a predetermined operation executed after generation of the Doppler waveform image; and
storage circuitry configured to store the selected color Doppler image in response to the predetermined operation.

US Pat. No. 10,621,756

APPARATUS AND METHOD FOR CORRECTING BIAS IN LOW-COUNT COMPUTED TOMOGRAPHY PROJECTION DATA

Canon Medical Systems Cor...

1. An apparatus, comprising:processing circuitry configured to
obtain projection data representing an intensity of X-ray radiation detected at a plurality of detector elements after traversing an object, the projection data being corrected for a baseline offset,
correct the projection data by performing a positivity mapping to generate corrected projection data,
perform a logarithm operation on the corrected projection data to generate post-log projection data,
correct the post-log projection data for a bias of the post-log projection data, using the projection data, to generate bias-corrected projection data, and
reconstruct an image of the object using the bias-corrected projection data, wherein
the projection data is linearly related to an exponential of an attenuation coefficient of the X-ray radiation and the post-log projection data is linearly related to the attenuation coefficient of the X-ray radiation.

US Pat. No. 10,610,185

X-RAY CT APPARATUS INCLUDING PROCESSING CIRCUITRY TO PERFORM A METAL-ARTIFACT REDUCING PROCESS

Canon Medical Systems Cor...

1. An X-ray CT apparatus, comprising:processing circuitry configured to:
detect X-rays that have passed through a subject by using a detector and acquire projection data based on a detection result;
obtain position information of a particular highly X-ray absorbent member in a body of the subject; and
derive information about transmission paths of the X-rays in accordance with a processing effect of an artifact reducing process performed on the particular highly X-ray absorbent member, based on the position information of the particular highly X-ray absorbent member.

US Pat. No. 10,588,593

X-RAY CT APPARATUS AND X-RAY DETECTOR

Canon Medical Systems Cor...

1. An X-ray detector comprising:a detector configured to detect X-rays emitted from an irradiator and generate an analog signal;
an analog-to-digital converter configured to convert the analog signal to a digital signal; and
a data transmitter configured to receive the digital signal from the analog-to-digital converter, wherein
signals are wirelessly transmitted and received in at least a part between the detector and the analog-to-digital converter or between the analog-to-digital converter and the data transmitter.

US Pat. No. 10,593,022

MEDICAL IMAGE PROCESSING APPARATUS AND MEDICAL IMAGE DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. A medical image processing apparatus which analyzes blood flow dynamics in a predetermined region of a subject, the blood flow dynamics being generated from medical images obtained by imaging the predetermined region in time sequence over a plurality of time phases, the medical image processing apparatus comprising:processing circuitry configured to
correct pixel values of a target image after being aligned, according to an amount of deformation of the target image when the target image is aligned with a reference image by executing the program read out from memory circuitry, the reference image and the target image being among the medical images in the plurality of time phases,
set a same grid on each of the reference image and the target image, thereby dividing each of the reference image and the target image into a plurality of regions in a grid-like arrangement,
calculate a relational expression between the deformation rate of the grid and a rate of change of the pixel values, and
correct the medical image based on the relational expression.

US Pat. No. 10,592,770

MEDICAL IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A medical image processing apparatus, comprising:a memory to store DICOM (Digital Imaging and Communication in Medicine) image data including study information generated from a study for a patient on a particular date and having a DICOM tag, the DICOM image data being obtained from a medical image diagnosis apparatus; and
processing circuitry configured to
collect general-purpose information relating to general-purpose image data incompatible with DICOM, the general-purpose image data not having the DICOM tag and being generated by an apparatus different from the medical image processing apparatus,
determine whether a date associated with the general-purpose image data is compatible with the particular date of the study which generated the DICOM image data, based on the general-purpose information and the study information,
output a warning of misidentification of the patient indicating that the patient might be misidentified in response to a result of the determination,
collect storage information relating to the general-purpose image data,
generate event information related to the study in which the DICOM image data is generated, and
collect appendant data pertaining to the general-purpose image data, and/or add, to the general-purpose image data, metadata representing what is indicated by the general-purpose image data,
generate comparison information based on the storage information, the event information, and at least one of the appendant data and the metadata, and
determine whether the general-purpose image data is related to the study, based on the generated comparison information.

US Pat. No. 10,593,070

MODEL-BASED SCATTER CORRECTION FOR COMPUTED TOMOGRAPHY

Canon Medical Systems Cor...

1. An apparatus, comprising:circuitry configured to
obtain projection data representing an intensity of X-ray radiation transmitted through an object and detected at a plurality of detector elements, the projection data being obtained for a plurality of views corresponding to respective projection angles relative to the object,
reconstruct, using the projection data, an image of the object to generate a spatial model of scatter of the X-ray radiation from the object,
simulate, for one or more views of the plurality of views, a scatter flux of the one or more views representing an intensity of scattered X-ray radiation detected at the plurality of detector elements, the intensity of scattered X-ray radiation being determined using a radiative transfer equation (RTE) method based on integrating a radiative transfer equation, and
determine, using the simulated scatter flux of the one or more views together with an accelerated method, which is accelerated relative to the RTE method, primary flux of the plurality of views, the primary flux representing an intensity of X-rays that have not been scattered, which are incident on the plurality of detector elements, wherein
a combination of simulating the scatter flux of the one or more views using the RTE method together with determining of the primary flux using the accelerated method is quicker than a method determining the primary flux using the RTE method to simulate scatter flux for all views of the plurality of views.

US Pat. No. 10,591,563

MAGNETIC RESONANCE IMAGING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:sequence control circuitry configured to control execution of a pulse sequence which includes a first segment and a second segment being provided prior to the first segment, the first segment being where signal acquisition is performed, the second segment being where an orientation of each proton within an imaging area being three-dimensionally dispersed and macroscopic longitudinal magnetization and transverse magnetization are reduced to substantially zero by applying a plurality of RF magnetic field pulses while changing a magnitude and/or a phase thereof and a plurality of spoiler gradient field pulses; and
processing circuitry configured to generate an image based on signals acquired by the pulse sequence.

US Pat. No. 10,575,823

MEDICAL DIAGNOSTIC APPARATUS, MEDICAL IMAGE PROCESSING APPARATUS AND MEDICAL IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. A medical diagnostic apparatus, comprising:a scanner to scan a three-dimensional region and acquire three-dimensional volume data of the three-dimensional region; and
processing circuitry configured to
generate a three-dimensional shape of a first part for a blood inflow path to a cardiac chamber, the first part being approximated using a first form and based on a contour of the first part in a plurality of first sectional images generated from the three-dimensional volume data, the plurality of first sectional images intersecting each other along an extending direction of the first part in which blood flows;
generate a three-dimensional shape of a second part for a blood outflow path from the cardiac chamber, the second part being approximated using a second form different from the first form and based on a contour of the second part in at least one second sectional image generated from the three-dimensional volume data, the at least one second sectional image being taken along an extending direction of the second part in which blood flows;
generate a three-dimensional shape of the cardiac chamber including the three-dimensional shapes of the first part and the second part by using the generated three-dimensional shape of the first part and the generated three-dimensional shape of the second part;
perform a rendering process using the three-dimensional shape of the cardiac chamber including the three-dimensional shapes of the first part and the second part, and generate a three-dimensional image representing at least part of a heart including the first part, the second part, and the cardiac chamber; and
control a display to display the three-dimensional image.

US Pat. No. 10,578,701

SYSTEMS, METHODS, AND COMPUTER-READABLE STORAGE MEDIUM FOR MAGNETIC RESONANCE IMAGING

Canon Medical Systems Cor...

8. A method for magnetic resonance (MR) imaging, comprising:generating two or more RF pulses to form a spin echo, wherein each RF pulse corresponds to selecting at least two slice locations;
encoding magnetic resonance (MR) magnetization to form echo signal data;
applying a set of time-shifts to a slice-selection gradient;
generating a pattern of slice-position-dependent moments on the echo signal data based on the set of time-shifts to the slice-selection gradient;
receiving image data corresponding to the echo signal data; and
reconstructing the image data to form a plurality of images, wherein each of the plurality of images corresponds to one of the selected slice locations.

US Pat. No. 10,564,273

ULTRASONIC DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An ultrasonic diagnostic apparatus comprising:a transmission circuit configured to repeatedly transmit an ultrasonic pulse through an ultrasonic probe;
a reception circuit configured to receive, as a reception signal, a reflected wave corresponding to the ultrasonic pulse received through the ultrasonic probe;
a data processing circuit configured to execute data processing for generating an ultrasonic image based on the reception signal;
an image generating circuit configured to generate the ultrasonic image based on the reception signal processed by the data processing circuit;
a switching power supply circuit configured to generate a drive voltage for at least one of the transmission circuit, the reception circuit, the data processing circuit, and the image generating circuit; and
a control circuit configured to
control the transmission circuit to repeatedly transmit the ultrasonic pulse, and
control intervals of power supply clock signals, each indicating a timing of a switching operation of the switching power supply circuit, such that time differences between falls of transmission or reception clock signals, each indicating a transmission or reception timing of the ultrasonic pulse, and rises of corresponding power supply clock signals become constant and are not zero.

US Pat. No. 10,564,281

ULTRASONOGRAPHY APPARATUS AND ULTRASONIC IMAGING METHOD

Canon Medical Systems Cor...

21. An ultrasonic imaging method that is executed by a computer, the method comprising:acquiring a first reception signal, the first reception signal being generated by delaying a plurality of reflected wave signals occurring at a reception aperture that is structured with a plurality of devices included in an ultrasound probe, wherein the delaying is according to a position in the reception aperture, assigning a first kind of weights to the delayed plurality of reflected wave signals thereby generating first weighted reflected wave signals, and adding the first weighted reflected wave signals thereby generating the first reception signal;
acquiring a second reception signal along a reception scan line, the second reception signal having reverberation components that are reduced compared to that of the first reception signal, the second reception signal being generated by assigning a second kind of weights to the delayed plurality of reflected wave signals thereby generating second weighted reflected wave signals, and adding the second weighted reflected wave signals thereby generating the second reception signal;
calculating a first coefficient using the second reception signal without using the first reception signal;
multiplying the first reception signal by the first coefficient to acquire output data; and
generating ultrasonic image data based on the acquired output data.

US Pat. No. 10,517,548

X-RAY DIAGNOSTIC APPARATUS AND CONTROL METHOD FOR X-RAY DIAGNOSTIC APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus, comprising:a top;
a bed configured to movably hold the top;
an X-ray tube configured to irradiate an object placed on the top with X-rays;
an X-ray detector arranged to face the X-ray tube and configured to generate X-ray projection data by detecting the X-rays emitted by the X-ray tube;
a supporting arm configured to movably support the X-ray tube and the X-ray detector;
a holder configured to movably hold the supporting arm; and
control processing circuitry configured to control a support unit that includes at least one of the bed, the supporting arm, and the holder to move a move unit that includes at least one of the top, the X-ray tube, the X-ray detector, and the supporting arm
wherein the control processing circuitry is further configured to
calculate arrival space coordinates, which are space coordinates predicted to be reached by movement of a mobile body based on vector data representing a movement amount and a movement direction in space coordinates of the mobile body, the mobile body being a region of interest set on a surface of the move unit, and
control the support unit in accordance with a distance between the calculated arrival space coordinates of the region of interest and space coordinates of an interference object.

US Pat. No. 10,517,559

NUCLEAR MEDICINE DIAGNOSTIC APPARATUS, DIAGNOSTIC IMAGING APPARATUS, AND IMAGE PROCESSING METHOD

CANON MEDICAL SYSTEMS COR...

6. An image processing method, comprising:counting radiation emitted from radioisotopes in an imaging region of an object;
setting a region of interest (ROI) in the imaging region;
determining association between count values of the counted radiation and pixel values of display pixels for the ROT in accordance with a distribution of the count values of the display pixels corresponding to the ROI, wherein the determining association comprises determining association between count values and pixel values of display pixels for a whole region including the ROI such that a range of the count values of display pixels corresponding to the whole region, ranging from a minimum value to a maximum value, corresponds to a specified pixel value range;
for the ROI, correcting the count values of the respective display pixels corresponding to the ROI in accordance with a ratio between a blood flow rate associated with the ROI and a specified blood flow rate; and
generating an image of the ROI, wherein generating the image comprises calculating, with use of the corrected count values, the pixel values of the respective display pixels corresponding to the ROI based on the association between the count values and the pixel values for the whole region.

US Pat. No. 10,499,874

MANAGEMENT SYSTEM FOR X-RAY DETECTOR AND X-RAY DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. A management system of X-ray detectors which detect X-rays irradiated from an X-ray generator to perform X-ray imaging, the management system comprising:processing circuitry configured to
inspect at least one item related to at least one of performance, function, and operation of an operation state of an X-ray detector of the X-ray detectors,
set a validity period to establish whether inspection results inspected are valid or not,
control the X-ray generator during the X-ray imaging,
determine whether the inspection results at operation-start inspection are normal or not, and
determine whether elapsed time from start of recording the inspection results exceeds the validity period or not,
wherein even when the inspection results are normal, when the elapsed time exceeds the validity period and the inspection results are determined to be invalid based on the validity period, the processing circuitry controls the X-ray detectors and the X-ray generator such that the X-ray imaging is not performed on a subject.

US Pat. No. 10,504,621

MEDICAL IMAGE PROCESSING APPARATUS, MEDICAL IMAGING APPARATUS AND IMAGE ARCHIVING APPARATUS

Canon Medical Systems Cor...

1. A medical image processing apparatus comprisingprocessing circuitry configured to:
extract a first medical image relating to a region of interest from a second medical image; and
add, to the first medical image, reconstruction matrix information added to the second medical image.

US Pat. No. 10,481,232

MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:sequence control circuitry configured to execute a first pulse sequence that acquires data by radial sampling and configured to execute a second pulse sequence a plurality of times by changing a frequency of magnetization transfer (MT) pulses, the second pulse sequence acquiring data by Cartesian sampling after applying an MT pulse, and
processing circuitry configured to calculate a spectrum based on data acquired from the first pulse sequence and the second pulse sequence.

US Pat. No. 10,481,235

MAGNETIC RESONANCE IMAGING APPARATUS AND IMAGE PROCESSING APPARATUS

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:sequence control circuitry configured to conduct, on a subject, first imaging, and second imaging that is subsequent to the first imaging; and
processing circuitry configured to
generate a first magnetic resonance image based on the first imaging conducted by the sequence control circuitry;
set an imaging condition with regard to the second imaging;
estimate, based on the first magnetic resonance image and the set imaging condition, information about an image quality in a case in which the second imaging is conducted,
cause a display to display the first magnetic resonance image and superimpose the estimated information on the displayed first magnetic resonance image,
receive, from an operator, a designation operation on the first magnetic resonance image,
change a setting of the imaging condition related to the second imaging based on the designation operation; and
generate a second magnetic resonance image based on the second imaging conducted by the sequence control circuitry.

US Pat. No. 10,459,048

MAGNETIC RESONANCE IMAGING APPARATUS AND GRADIENT COIL

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus comprising:a gradient coil configured to generate a gradient magnetic field in an image taking space,
wherein
the gradient coil includes:
a first coil member formed by using a first metal that is non-magnetic; and
a second coil member connected to the first coil member and formed by using a second metal that is different from the first metal and is non-magnetic, wherein
the first coil member is a conductor pattern that forms a coil, and
the second coil member is a terminal that has connected thereto a power supply cable configured to supply an electric current flowing in the conductor pattern,
wherein the first coil member is connected to the second coil member by solder at a connection surface that is a part of a surface of the first coil member, the connection surface being connected to the second member after being plated with either tin or nickel.

US Pat. No. 10,687,771

X-RAY DIAGNOSTIC APPARATUS COMPRISING A POSITION SPECIFYING UNIT AND A CONTROL UNIT

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising:a bed including a top;
an X-ray tube configured to generate an X-ray;
an X-ray detector configured to detect the X-ray which has been generated by the X-ray tube and has passed through an object placed on the top of the bed;
a holding mechanism configured to hold the X-ray tube and the X-ray detector, and movable on a floor surface of an examination room;
position specifying circuitry configured to specify a position of the holding mechanism in the examination room and a position of the bed in the examination room; and
control circuitry configured to control the holding mechanism in order to change the position and an angle of the holding mechanism based on the position of the holding mechanism and the position of the bed, wherein
the holding mechanism includes:
an arm holding mechanism configured to rotatably hold the X-ray tube and the X-ray detector, and
a cart, which is configured to hold the arm holding mechanism movably in the examination room,
the control circuitry controls at least one of the arm holding mechanism and the cart in order to change the position and an angle of the arm holding mechanism with respect to the too based on the position of the holding mechanism and a plurality of positions on the bed, and
the control circuitry controls the arm holding mechanism and the cart, which is configured to hold the arm holding mechanism movably in the examination room, in descending order of priority.

US Pat. No. 10,684,343

MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD

CANON MEDICAL SYSTEMS COR...

1. A magnetic resonance imaging apparatus, comprising:sequence control circuitry configured to execute two pulse sequences, thereby acquiring two pieces of data, each of the two pulse sequences being a pulse sequence in which the sequence control circuitry acquires data after applying a short inversion time recovery (STIR) pulse while concurrently applying a gradient magnetic field for spatial selection and each of the two pulse sequences being executed in two different timings by the sequence control circuitry; and
processing circuitry configured to generate an image by performing a subtraction processing between the two pieces of data acquired by the sequence control circuitry,
wherein the sequence control circuitry is configured to apply the STIR pulse while concurrently applying the gradient magnetic field in a way in which a plane perpendicular to a running direction of a blood vessel is selected.

US Pat. No. 10,639,105

NAVIGATION APPARATUS AND METHOD

Canon Medical Systems Cor...

1. A navigation apparatus for assisting navigation of a device through tissue, the apparatus comprising processing circuitry configured to:receive volumetric medical imaging data representative of an anatomical region, the anatomical region comprising a region of tissue to be traversed by a device;
process the volumetric medical imaging data to identify different types of tissue in the region of tissue, wherein the different types of tissue comprise soft plaque and hard plaque;
determine a position of the device; and
process the volumetric medical imaging data to obtain a virtual endoscopic view of at least part of the region of tissue, the virtual endoscopic view comprising a virtual representation of the device in its determined position;
wherein the virtual endoscopic view is rendered such as to visually distinguish the identified different types of tissue, thereby assisting navigation of the device through the region of tissue.

US Pat. No. 10,609,322

MEDICAL DIAGNOSTIC APPARATUS AND MEDICAL DIAGNOSTIC SYSTEM

Canon Medical Systems Cor...

1. A medical diagnostic apparatus which is communicable with a terminal device, comprising:medical image generation circuitry configured to generate a medical image, based on an output of an ultrasonic probe or an X-ray detector;
first display control circuitry configured to cause first display circuitry to display the medical image;
compression circuitry configured to generate a first compressed image by compressing the medical image;
first communication circuitry configured to wirelessly transmit the generated first compressed image to the terminal device;
one-time password display circuitry configured to generate and update a one-time password for every communication connection request from the terminal device and to display the one-time password at a predetermined position on a screen of the first display circuitry;
authentication circuitry which permits communication between the first communication circuitry and the terminal device, when the one-time password displayed has been input by the terminal device; and
control circuitry, wherein,
if marker information including position information indicative of a position on the first compressed image, which position is designated by a user, is generated and wirelessly transmitted from the terminal device while the first compressed image is being displayed on the terminal device such that the first compressed image is substantially synchronized with the display of the medical image on the first display circuitry, the first communication circuitry is configured to receive the marker information which is wirelessly transmitted from the terminal device,
the first display control circuitry is configured to cause the first display circuitry to display a composite image in which a marker is composited on the medical image, based on the marker information, and
the control circuitry is configured to store in storage circuitry the medical image which constitutes the composite image, in accordance with a storage request that is accepted while the composite image is being displayed on the first display circuitry.

US Pat. No. 10,598,740

MAGNETIC RESONANCE IMAGING APPARATUS AND MAGNETIC RESONANCE IMAGING METHOD

Canon Medical Systems Cor...

1. A magnetic resonance imaging apparatus, comprising:a temperature sensor configured to acquire a temperature; and
a processing circuit configured to
calculate, based on information on an imaging sequence in which magnetic resonance imaging is to be performed, an estimated value of a consumption energy of a gradient coil when the imaging sequence is executed; and
calculate, based on the temperature acquired by the temperature sensor and the estimated value of the consumption energy, an estimated value of a temperature of the gradient coil, the temperature of the gradient coil undergoing changes as the imaging sequence is executed,
wherein the processing circuit is further configured to calculate the estimated value of the temperature of the gradient coil based on a magnitude of interaction between conductor patterns of X-axis, Y-axis, and Z-axis gradient coils.

US Pat. No. 10,575,809

X-RAY DIAGNOSIS APPARATUS

Canon Medical Systems Cor...

1. An X-ray diagnosis apparatus comprising processing circuitry configured:to acquire a first X-ray image on a basis of X-rays radiated onto a subject in a first radiation dose;
to acquire a second X-ray image on a basis of X-rays radiated onto the subject in a second radiation dose lower than the first radiation dose;
to acquire a third X-ray image on a basis of X-rays radiated onto a region of interest of the subject into which a medical device is inserted and onto a region other than the region of interest, in mutually-different radiation doses;
to obtain position information of the region of interest in the third X-ray image;
to obtain positions corresponding to the region of interest in the first X-ray image and in the second X-ray image on a basis of the position information; and
to generate a subtraction image by calculating a difference between the region of interest in the third X-ray image and a region corresponding to the region of interest in the first X-ray image and calculating a difference between a region other than the region of interest in the third X-ray image and a region corresponding to the region other than the region of interest in the second X-ray image.

US Pat. No. 10,568,587

X-RAY DIAGNOSTIC APPARATUS, IMAGE PROCESSING APPARATUS, AND IMAGE PROCESSING METHOD

Canon Medical Systems Cor...

1. An X-ray diagnostic apparatus comprising processing circuitry configured togenerate plural frames of time-series first vessel image data, whose observation direction is a first observation direction, and generates at least one frame of second vessel image data, whose observation direction is a second observation direction,
generate plural frames of third vessel image data, whose observation direction is the second observation direction, by transforming more than one frame out of the plural frames of the first vessel image data based on a blood vessel shape in at least one of the plural frames of the first vessel image data and a blood vessel shape in at least one of one frame of the second vessel image data, the third vessel image data corresponding to respective time phases of the plural frames of the first vessel image data,
generate first color image data, whose observation direction is the first observation direction, and that reflects a flow of a contrast agent by using more than one frame cut of the plural frames of the first vessel image data, and generates second color image data, whose observation direction is the second observation direction, and that reflects the flow of the contrast agent by using more than one frame out of the plural frames of the third vessel image data, and
cause a display to display a stereoscopic image based on the first color-image data and the second color image data.

US Pat. No. 10,517,543

MULTIRESOLUTION ITERATIVE RECONSTRUCTION FOR REGION OF INTEREST IMAGING IN X-RAY CONE-BEAM COMPUTED TOMOGRAPHY

The University of Chicago...

18. A method, comprising:obtaining projection data representing an intensity of radiation detected at a plurality of detector elements,
downsampling the projection data to generate low-resolution projection data;
reconstructing a low-resolution image using the low-resolution projection data;
selecting a region within the low-resolution image to generate a first image-domain region of interest (ROI),
generating a first sinogram-domain ROI using a forward projection of the first image-domain ROI,
obtaining, from the projection data, first ROI projection data representing the intensity of the radiation detected within the first sinogram-domain ROI, wherein the first ROI projection data has a smaller pixel pitch than the low-resolution projection data, and
reconstructing a multiresolution image having a low-resolution pixel pitch outside the first image-domain ROI and a first pixel pitch inside the first image-domain ROI, wherein the low-resolution pixel pitch is greater than the first pixel pitch.