Abstract: An X-ray CT apparatus includes a perfusion data acquisition unit, a perfusion parameter calculating unit and a perfusion parameter display unit. The perfusion data acquisition unit generate perfusion data by exposing an X-ray to the object with injecting contrast medium. The perfusion parameter calculating unit calculates perfusion parameters corresponding to ROIs based on time variations in density of the contrast medium for the ROIs. The perfusion parameter display unit divides a period to be a calculation target of the time variations into plural time ranges and sequentially displays images each including the ROIs. The images correspond to the time ranges and mutually different time phases respectively and are masked so as to make only ROIs at which the perfusion parameters show values displayed.

Abstract: According to an embodiment, a medical image processing apparatus includes an extraction unit, a calculation unit, and a selection unit. The extraction unit extracts an image region having an image element value larger than a predetermined value from a first image of at least one time phase and second images of a plurality of time phases. The calculation unit calculates a feature quantity that fluctuates in accordance with motion of the image region for the first image of at least the one time phase and the second images of the time phases. The selection unit selects the first image and the second image having similar image features of the image region based on the feature quantity from among the first image of at least the one time phase and the second images of the time phases.

Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.

Abstract: An X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a volume data reconstruction unit, a lung field region specifying unit, a discrimination unit, an image generation unit, and a display unit. The volume data reconstruction unit reconstructs first volume data of a chest region of an object based on an output from the X-ray detector. The lung field region specifying unit specifies a lung field region of the object in the first volume data. The discrimination unit generates second volume data in which a low CT value region is discriminated from a region other than the low CT value region in the lung field region. The image generation unit generates an image representing a two-dimensional distribution concerning an existing ratio of the low CT value region to the lung field region based on the second volume data.

Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.

Abstract: An image processing system according to an embodiment is an image processing system having a terminal device including a display unit that displays a medical image. The image processing system includes an acquiring unit and a display controller. The acquiring unit acquires a position of the terminal device relative to a predetermined target. The display controller causes the display unit to display a medical image in accordance with the relative position of the terminal device relative to the target acquired by the acquiring unit.

Abstract: A medical diagnostic imaging apparatus according to an embodiment includes morphological image data collecting circuitry, displacement calculating circuitry, functional image data collecting circuitry, and correction circuitry. The morphological image data collecting circuitry collects pieces of morphological image data of a target region at a plurality of time phases. Based on a plurality of the collected pieces of morphological image data, the displacement calculating circuitry calculates displacements of morphological image regions contained in the collected pieces of morphological image data. The functional image data collecting circuitry collects functional image data of the target region. The correction circuitry generates, based on the displacements calculated by the displacement calculating circuitry, corrected image data corrected for motion of the target region.

Abstract: According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry extracts a rigid region from predetermined medical image data among a plurality of items of medical image data. Further, between first medical image data and second medical image data among the plurality of items of medical image data, the processing circuitry performs rigid registration on the rigid region and performs non-rigid registration on a region other than the rigid region.

Abstract: According to one embodiment, a structuring circuitry temporarily structures a dynamical model of analysis processing based on the time-series medical image. The identification circuitry identifies a latent variable of the dynamical model so that at least one of a prediction value of a blood vessel morphology and a prediction value of a bloodstream based on the temporarily structured dynamical model is in conformity with at least one of an observation value of the blood vessel morphology and an observation value of the bloodstream measured in advance. The analysis circuitry analyzes the dynamical model to which the identified latent variable is allocated.

Abstract: According to an embodiment, a medical image processing apparatus includes an extraction unit, a calculation unit, and a selection unit. The extraction unit extracts an image region having an image element value larger than a predetermined value from a first image of at least one time phase and second images of a plurality of time phases. The calculation unit calculates a feature quantity that fluctuates in accordance with motion of the image region for the first image of at least the one time phase and the second images of the time phases. The selection unit selects the first image and the second image having similar image features of the image region based on the feature quantity from among the first image of at least the one time phase and the second images of the time phases.

Abstract: According to on embodiment, a photon counting CT apparatus includes a hybrid detector and processing circuitry. The hybrid detector includes CT detectors and PCCT detectors. The CT detectors output integral signals concerning the detected X-rays. The PCCT detectors output a count signal for each of a plurality of energy bands concerning the detected X-rays. The processing circuitry estimate a count signal concerning an estimation target CT detector of the CT detectors based on an integral signal output from the estimation target CT detector and a count signal output from the PCCT detector. And the processing circuitry reconstruct an image based on the estimated count signal and the count signal.

Abstract: An image processing apparatus according to an embodiment includes a processing circuitry. The processing circuitry is configured to obtain images in a time series including images of a blood vessel of a subject and correlation information indicating a correlational relationship between physical indices of the blood vessel and function indices of the blood vessel related to vascular hemodynamics, calculate blood vessel morphology indices in a time series indicating morphology of the blood vessel of the subject, on a basis of the images in the time series, and identify a function index of the blood vessel of the subject, by using a physical index of the blood vessel of the subject obtained from the blood vessel morphology indices, on a basis of the correlation information.

Abstract: The extraction unit extracts a plurality of medical images as a list display target from an image storage unit storing a plurality of medical images and an plurality of apparatus types in association with each other. The list generation unit generates a list in which a plurality of reduced images respectively corresponding to the plurality of extracted medical images are arranged. The plurality of reduced images are arranged for each apparatus type in the list, and the list clearly indicates a reduced image corresponding to a candidate image of the plurality of extracted medical images that is more likely to be used. The display displays the generated list.

Abstract: According to one embodiment, an image observation apparatus includes a condition storage, list generation circuitry, and a display. The condition storage stores a plurality of display target conditions respectively corresponding to a plurality of display areas in a display screen. The list generation circuitry generates a plurality of image lists respectively corresponding to the plurality of display areas, which concern additional items of a plurality of images respectively corresponding to the display target conditions. The display displays the plurality of image lists in the plurality of display areas, and an image corresponding to an additional item selected from the plurality of displayed image lists in the corresponding display area.

Abstract: There is provided a medical image processing apparatus which includes a first extraction unit configured to extract coronary arteries depicted in images of a plurality of time phases relating to the heart, and to extract at least one stenosed part depicted in each coronary artery; a calculation unit configured to calculate a pressure gradient of each of the extracted coronary arteries, based on tissue blood flow volumes of the coronary arteries; a second extraction unit configured to extract an ischemic region depicted in the images; and a specifying unit configured to specify a responsible blood vessel of the ischemic region by referring to a dominance map, in which each of the extracted coronary arteries and a dominance territory are associated, for the extracted ischemic region, and to specify a responsible stenosis, based on the pressure gradient corresponding to a stenosed part in the specified responsible blood vessel.

Abstract: A centerline extraction unit extracts at least two coronary artery centerline structures from at least two images respectively corresponding to at least two cardiac phases concerning a heart, an interpolation processing unit interpolates coronary artery centerline structures concerning other cardiac phases from the at least two extracted coronary artery centerline structures to generate coronary artery centerline structures respectively corresponding to a plurality of cardiac phases throughout one heartbeat of the heart, and a displacement distribution calculation unit calculates a plurality of displacement distributions between the respective cardiac phases from a plurality of coronary artery centerline structures throughout the one heartbeat.

Abstract: According to one embodiment, a medical image diagnostic apparatus includes a storage memory, processing circuitry, and a display. The storage memory stores data of a plurality of FFR distribution maps constituting a time series regarding a coronary artery, and data of a plurality of morphological images corresponding to the time series. The processing circuitry converts the plurality of FFR distribution maps into a plurality of corresponding color maps, respectively. The display displays a plurality of superposed images obtained by superposing the plurality of color maps and the plurality of morphological images respectively corresponding in phase to the plurality of color maps. The display restricts display targets for the plurality of color maps based on the plurality of FFR distribution maps or the plurality of morphological images.

Abstract: Provided is a medical image diagnostic apparatus, including: an internal image acquiring unit for acquiring a plurality of internal images different in time phase by irradiating a body part of a subject with X-rays; an outer appearance image acquiring unit for acquiring an outer appearance image by photographing the body part of the subject; an analysis unit for analyzing the outer appearance image to acquire first shape information indicating a shape of the body part of the subject and analyzing each of the plurality of internal images to acquire second shape information indicating a shape of the body part of the subject; and a display control unit for displaying the outer appearance image and the each of the plurality of internal images by superimposing one on another so that the body part of the subject included in the outer appearance image and the body part of the subject included in the each of the plurality of internal images are located in the same position based on the first shape information and the

Abstract: An imaging condition setting unit sets imaging conditions for a pre-contrast enhancement scan, a monitoring scan, and a post-contrast enhancement scan. A ROI setting unit sets a region of interest for the monitoring scan in a reference image generated by a reference image scan executed before the pre-contrast enhancement scan, the monitoring scan, and the post-contrast enhancement scan. The scan control unit controls an X-ray generation unit and an X-ray detection unit to sequentially execute, based on the imaging conditions, the pre-contrast enhancement scan, the monitoring scan, and the post-contrast enhancement scan.

Abstract: An image processing apparatus according to an embodiment includes a generator, a selector, a first detector, and a second detector. The generator generates a group of frames corresponding to reconstructed images that correspond to a plurality of heartbeat phases of a heart. The selector specifies a corresponding frame that corresponds to a specific heartbeat phase from among the group of frames. The a first detector detects a boundary of the heart in the corresponding frame. The second detector detects a boundary of the heart in the frames other than the corresponding frame, by using the detected boundary in the corresponding frame.