Abstract: An X-ray computed tomography imaging apparatus according to one embodiment includes processing circuitry. The processing circuitry obtains reconstructed image data corresponding to a second energy range including an energy range different from a first energy range. The processing circuitry infers motion-quantity information as to a region of interest included in the reconstructed image data, based on the reconstructed image data. The processing circuitry then corrects a quantity of motion of the region of interest included in reconstructed image data containing data corresponding to at least the first energy range, based on the motion-quantity information.

Abstract: A photon counting CT apparatus of an embodiment includes processing circuitry. The processing circuitry is configured to generate data from which a plurality of types of contrast-enhancing substances can be discriminated on the basis of detection results obtained by monitoring scanning performed on a subject into which the plurality of types of contrast-enhancing substances have been injected.

Abstract: A photon counting X-ray computed tomography apparatus according to an embodiment includes a photon counting detector and a time digital converter. The photon counting detector is configured to output a pulse corresponding to photons included in an X-ray; and the time digital converter is configured to obtain time information corresponding to timing at which the photons were detected, on the basis of the pulse.

Abstract: An X-ray CT apparatus of an embodiment includes a rotating unit and processing circuitry. The rotating unit is configured to rotatably hold the X-ray tube and the X-ray detector. The processing circuitry is configured to switch energy bin sets related to discrimination of photons detected by the X-ray detector between a first energy bin set and a second energy bin set in which at least a part of an energy bin combination is different from the first energy bin set during one rotation of the rotating unit and collect correction data for each of the first energy bin set and the second energy bin set during one rotation in response to switching between the first energy bin set and the second energy bin set.

Abstract: A first processor of embodiments outputs intermediate data with a quantity less than that of third medical image data by inputting the third medical image data to a compression model including an input layer and a middle layer from two trained models obtained by dividing, on the basis of the middle layer, a trained model which has been trained such that second medical image data is output from an output layer by inputting first medical image data to the input layer. A second processor outputs fourth medical image data with a quantity greater than that of the intermediate data by inputting the intermediate data acquired from the first processor via a network to an expansion model including the output layer from the two trained models.

Abstract: According to one embodiment, an X-ray computed tomography (CT) apparatus includes an X-ray tube, an area detector, a rotary frame, generation circuitry, processing circuitry, and a controller. The generation circuitry is configured to generate a reference image of the subject based on an output from the area detector that is given in response to radiation of the X-rays from a predetermined position around the rotational axis for a period required to perform on/off control of radiation of the X-rays. The processing circuitry is configured to set, based on the reference image, an imaging condition for use in scanning for the subject. The controller is configured to control the scanning based on the set imaging condition.

Abstract: A medical image diagnostic system includes processing circuitry configured (to): (a) acquire a trained model generated by using, as learning data, images or signals corresponding to a first group of time-series images acquired by performing a first pre-scan on a first patient injected with a contrast agent in a first examination, as well as timing information about timing of a transition from a first pre-scan to a first main scan in a first examination, and information about appropriateness of the timing; and (b) determine appropriate timing of a transition from a second pre-scan to a second main scan by inputting, to the trained model, images or signals corresponding to a second group of time-series images acquired by performing the second pre-scan on a second patient injected with a contrast agent in the second examination different from the first examination.

Abstract: A medical apparatus of embodiments includes processing circuitry. The processing circuitry is configured to input third projection data to a first trained model to generate fourth projection data, the first trained model being generated through learning using first projection data collected by a first X-ray detector included in a first scanner and relatively greatly affected by scattered rays as learning data of an input side and using second projection data relatively less affected by scattered rays as learning data of an output side, the first trained model being configured to generate, on the basis of the third projection data collected by a second X-ray detector included in a second scanner, the fourth projection data in which the influence of scattered rays in the third projection data has been reduced. The first projection data is collected by the first X-ray detector in a case where a collimator provided in a first X-ray source included in the first scanner has a first opening width.

Abstract: An X-ray CT apparatus according to an embodiment includes: an X-ray generator configured to generate X-rays; an X-ray detector configured to detect X-rays that have passed through a patient and including first to n-th groups of detecting elements configured to store therein electric charges generated from the detection (where n is an integer of 2 or larger); a Data Acquisition System (DAS) configured to acquire detection data for each view, by repeatedly performing a process of sequentially reading the electric charges stored in the first to the n-th groups of detecting elements in units of groups, starting with the first group of detecting elements; and processing circuitry configured to periodically change energy of X-rays radiated onto the patient and to also control the X-ray generator so that, while the detection data related to one view or a plurality of consecutive views is acquired, an average energy level of the X-rays radiated onto the patient is substantially equal among the groups of detecting ele

Abstract: According to one embodiment, an X-ray computed tomography (CT) apparatus includes an X-ray tube, an area detector, a rotary frame, generation circuitry, processing circuitry, and a controller. The generation circuitry is configured to generate a reference image of the subject based on an output from the area detector that is given in response to radiation of the X-rays from a predetermined position around the rotational axis for a period required to perform on/off control of radiation of the X-rays. The processing circuitry is configured to set, based on the reference image, an imaging condition for use in scanning for the subject. The controller is configured to control the scanning based on the set imaging condition.

Abstract: A medical image diagnosis apparatus according to an embodiment obtains a first position of a predetermined part of an image taking target included in a medical robot system, a first direction of a rotation axis of the image taking target, and a first rotation angle of the image taking target, within a coordinate system of the medical image diagnosis apparatus. The medical image diagnosis apparatus derives information that brings the coordinate system of the medical image diagnosis apparatus and the coordinate system of the medical robot system into correspondence with each other, on the basis of the first position, the first direction, and the first rotation angle, as well as a second position of the predetermined part, a second direction of the rotation axis, and a second rotation angle of the image taking target, within a coordinate system of the medical robot system.

Abstract: An X-ray CT apparatus includes: a gantry having an opening provided to be interposed between an X-ray tube and an X-ray detector; a couch including driving circuitry for inserting a couchtop on which a subject is placed, into the opening; storage circuitry storing therein pieces of information that are related to puncture positions of the couchtop and correspond to pieces of unique information of practitioners who each apply a manipulation to the subject; and processing circuitry configured, when a first practitioner is to apply the manipulation, to control the driving circuitry so as to move the couchtop to a puncture position indicated by a piece of information related to a puncture position corresponding to a piece of unique information pertaining to the first practitioner, the piece of information being among the pieces of information that are related to the puncture positions and stored in the storage circuitry.

Abstract: A first processor of embodiments outputs intermediate data with a quantity less than that of third medical image data by inputting the third medical image data to a compression model including an input layer and a middle layer from two trained models obtained by dividing, on the basis of the middle layer, a trained model which has been trained such that second medical image data is output from an output layer by inputting first medical image data to the input layer. A second processor outputs fourth medical image data with a quantity greater than that of the intermediate data by inputting the intermediate data acquired from the first processor via a network to an expansion model including the output layer from the two trained models.

Abstract: According to one embodiment, an X-ray CT apparatus includes a calculator, a transmitter, a data acquisition unit, and a processor. The calculator calculates a difference between imaging time phases of a first contrast agent and a second contrast agent. The transmitter sends information on the difference between the imaging time phases to an injector. The injector injects the first contrast agent and the second contrast agent into the subject at different timings based on the information. The data acquisition unit scans a subject with X-rays at a predetermined imaging timing to acquire detection data corresponding to different X-ray energies. The processor analyzes the detection data acquired at the predetermined imaging timing to generate a plurality of images corresponding to the imaging time phases.

Abstract: A medical apparatus of embodiments includes processing circuitry. The processing circuitry is configured to input third projection data to a first trained model to generate fourth projection data, the first trained model being generated through learning using first projection data collected by a first X-ray detector included in a first scanner and relatively greatly affected by scattered rays as learning data of an input side and using second projection data relatively less affected by scattered rays as learning data of an output side, the first trained model being configured to generate, on the basis of the third projection data collected by a second X-ray detector included in a second scanner, the fourth projection data in which the influence of scattered rays in the third projection data has been reduced. The first projection data is collected by the first X-ray detector in a case where a collimator provided in a first X-ray source included in the first scanner has a first opening width.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a gantry, control circuitry, and acquisition circuitry. The X-ray tube generates X-rays. The X-ray detector detects the X-rays generated by the X-ray tube. The gantry supports the X-ray tube and the X-ray detector rotatably around a rotation axis. While the X-ray tube and the X-ray detector are rotated, the control circuitry allows the X-ray tube to generate X-rays and alters a predetermined CT imaging parameter for which correction data is acquired during a single rotation. While the X-ray tube and the X-ray detector are rotated, the acquisition circuitry acquires correction data related to the target CT imaging parameter through the X-ray detector.

Abstract: A medical image diagnostic system according to an embodiment includes processing circuitry configured: to acquire a trained model generated by using, as learning data, at least one selected from among a first group of time-series images acquired by performing a first pre-scan on a first patient injected with a contrast agent in a first examination using the medical image diagnostic system, a first group of time-series partial images being generated on the basis of the first group of time-series images and corresponding to a first region of interest of the first patient, and first time-series information about signal intensities in the first region of interest generated on the basis of the first group of time-series images, as well as timing information about timing of a transition from the first pre-scan to a first main scan in the first examination, and information about appropriateness of the timing; and to determine, in a second examination different from the first examination, appropriate timing of a tran

Abstract: An X-ray CT apparatus according to an embodiment includes: an X-ray generator configured to generate X-rays; an X-ray detector configured to detect X-rays that have passed through a patient and including first to n-th groups of detecting elements configured to store therein electric charges generated from the detection (where n is an integer of 2 or larger); a Data Acquisition System (DAS) configured to acquire detection data for each view, by repeatedly performing a process of sequentially reading the electric charges stored in the first to the n-th groups of detecting elements in units of groups, starting with the first group of detecting elements; and processing circuitry configured to periodically change energy of X-rays radiated onto the patient and to also control the X-ray generator so that, while the detection data related to one view or a plurality of consecutive views is acquired, an average energy level of the X-rays radiated onto the patient is substantially equal among the groups of detecting ele

Abstract: A medical image diagnosis apparatus according to an embodiment obtains a first position of a predetermined part of an image taking target included in a medical robot system, a first direction of a rotation axis of the image taking target, and a first rotation angle of the image taking target, within a coordinate system of the medical image diagnosis apparatus. The medical image diagnosis apparatus derives information that brings the coordinate system of the medical image diagnosis apparatus and the coordinate system of the medical robot system into correspondence with each other, on the basis of the first position, the first direction, and the first rotation angle, as well as a second position of the predetermined part, a second direction of the rotation axis, and a second rotation angle of the image taking target, within a coordinate system of the medical robot system.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a gantry, control circuitry, and acquisition circuitry. The X-ray tube generates X-rays. The X-ray detector detects the X-rays generated by the X-ray tube. The gantry supports the X-ray tube and the X-ray detector rotatably around a rotation axis. While the X-ray tube and the X-ray detector are rotated, the control circuitry allows the X-ray tube to generate X-rays and alters a predetermined CT imaging parameter for which correction data is acquired during a single rotation. While the X-ray tube and the X-ray detector are rotated, the acquisition circuitry acquires correction data related to the target CT imaging parameter through the X-ray detector.