Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray source, a plurality of lead plates, attention position specifying circuitry, stop control circuitry. The X-ray source generates X-rays. The plurality of lead plates includes an aperture which narrows an irradiation range of X-rays with which an object is irradiated by the X-ray source. The attention position specifying circuitry specifies an attention position based on a line of sight of an observer. The stop control circuitry performs movement control of the plurality of lead plates based on the specified attention position.

Abstract: According to one embodiment, a radiotherapy planning apparatus includes processing circuitry. The processing circuitry calculates initial irradiation directions of particle beams and an initial dose distribution corresponding to the initial irradiation directions by using a three-dimensional medical image concerning an object. The processing circuitry disperses some or all of the initial irradiation directions in response to a dispersion instruction via an input device. The processing circuitry modifies the initial dose distribution based on the dispersed irradiation directions.

Abstract: An X-ray diagnosis apparatus comprises processing circuitry. The processing circuitry is configured: to generate first subtraction image by using a first image acquisition condition; to generate second subtraction image by using a second image acquisition condition that are substantially same as the first image acquisition condition; to generate first color image by using a first processing condition, each pixel of the first color image having a color according to a temporal transition at a corresponding position of the first subtraction image; to generate, by using a second processing condition that is substantially same as the first processing condition, second color image, each pixel of the second color image having a color according to a temporal transition at a corresponding position of the second subtraction image; and to cause a stereoscopic image to be displayed on the basis of the first color image and the second color image.

Abstract: According to one embodiment, an image processing device includes processing circuitry. The processing circuitry acquires a plurality of first image data indicating a plurality of time-sequential bloodstream images obtained after administering contrast agent to an object, and sets a target region on second image data. The second image data are generated based on the plurality of the first image data so as to indicate information on temporal change of pixel values of each pixel. Further, the processing circuitry selects a reproduction section by selecting at least reproduction-start image data and reproduction-end image data from the plurality of first image data based on bloodstream information of the target region.

Abstract: A support apparatus comprises processing circuitry. The processing circuitry is configured to calculate, based on an irradiation plan with radiation on a target site of a subject, a recommendation degree of disposition of an ultrasonic probe configured to scan the target site at irradiation with the radiation, for each position in the subject. And the processing circuitry is configured to notify an operator of the recommendation degree in association with a position in the subject.

Abstract: According to one embodiment, an X-ray diagnostic system is used with an operation apparatus for operating, from a position separated from an object, a device inserted inside the object, and includes an imaging apparatus, an designation receiving circuit, a first display, and a second display. The imaging apparatus performs X-ray imaging of the object. The designation receiving circuit receives designation of a position on medical data from a first user who operates the device. The first display is disposed at a position visible from the first user, and displays a first image according to the designation of the position. The second display is disposed at a position visible from a second user who performs positioning of the imaging apparatus, and displays a second image different from the first image according to the designation of the position.

Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an imaging apparatus, processing circuitry and permission input circuitry. The imaging apparatus includes an imaging system performing X-ray imaging of an object, and a bed on which the object is placed. The processing circuitry accepts an instruction to cause the imaging apparatus to perform a operation, and notifies a content of the operation relating to the accepted instruction to a first user. The permission input circuitry accepts information indicating permission of the operation from the first user who has confirmed the content of the operation. The processing circuitry causes the imaging apparatus to perform the operation to more severely restrict the operation compared with after acceptance of information indicating permission of the operation by the permission input circuitry, until the acceptance of information indicating permission of the operation by the permission input circuitry.

Abstract: According to one embodiment, a medical image diagnosis system includes a plurality of devices, operating circuitry, processing circuitry, and a display. The plurality of devices is to be inserted into a body of an object. The operating circuitry operates at least one of the devices. The processing circuitry obtains a medical image of the object and specifies a device being operated based on movement of the device in the medical image when the device is being operated by the operating circuitry. The display identifiably displays a device to be operated by the operating circuitry based on a result of specification by the processing circuitry.

Abstract: A computed tomography (CT) imaging apparatus that reduces metal artifacts for digital subtraction angiography by, in circuitry, obtaining mask frames and contrast frames generated during scans of an object; performing a first reconstruction of the mask frames to generate metal volume data; identifying metal voxels in the metal volume data; re-projecting the metal voxels into the mask frames to generate metal-mask frames; defining a region of interest in each of the mask frames, each region of interest including metal regions; re-projecting the contrast frames; blending the mask frames with the re-projected contrast frames; registering the contrast frames with respect to the blended mask frames performing a cross-correlation analysis of the mask frames and the contrast frames, frame-pair-by-frame-pair; subtracting the registered contrast image from the corresponding mask image, frame-pair-by-frame-pair, to generate subtracted frames; and performing a second reconstruction on the subtracted frames.

Abstract: An X-ray image diagnostic apparatus includes an X-ray imager, an image data generator, a position information acquisition mechanism, a position information corrector, and a display. The X-ray imager generates projection data by X-ray imaging in first and second imaging modes for a patient. The image data generator generates reference image data based on projection data in the first imaging mode and image data for positional deviation correction based on projection data in the second imaging mode. The position information acquisition mechanism acquires position information of a treatment device inserted into the patient. The position information corrector corrects the position information of the treatment device based on the position information of the treatment device and treatment device information of the image data for positional deviation correction, collected by X-ray imaging in the second imaging mode. The display displays the reference image data to which the corrected position information is added.

Abstract: An X-ray diagnostic apparatus according to an embodiment includes a first imaging system, a second imaging system, and processing circuitry. The first imaging system holds a first X-ray tube and a first X-ray detector in a rotatable manner. The second imaging system holds a second X-ray tube and a second X-ray detector in a rotatable manner, and rotating centers, which are capable to set independently, between the first imaging system and the second imaging system. The processing circuitry makes a rotating center of the first imaging system and the rotating center of the second imaging system substantially equivalent to each other when a rotation imaging program using the first imaging system and the second imaging system is selected.

Abstract: A medical image processing device according to an embodiment includes a first reconstruction unit, a second reconstruction unit, and an image combining unit. The first reconstruction unit generates a first reconstructed image on the basis of an X-ray collection image using a first reconstruction filter. The second reconstruction unit generates a second reconstructed image on the basis of the X-ray collection image, using a second reconstruction filter having a high-frequency emphasis effect more than that of the first reconstruction filter. The image combining unit combines the first reconstructed image with the second reconstructed image.

Abstract: A three-dimensional image processing apparatus which obtains a three-dimensional image from a plurality of images from different projection views of a patient which have been obtained by carrying out multiple imaging while rotating around the patient, includes a locating unit to specify a point of one of the plurality of images from different projection views. A searching unit searches a point corresponding to the specified point in the plurality of images from different projection views, on the basis of the specified point. A reconstruction region identification unit identifies a region of a part of a region which can be reconstructed, as a reconstruction region by using the specified point and the searched point. A reconstruction unit obtains a three-dimensional image by reconstructing an image in the identified reconstruction region.

Abstract: An image processing apparatus includes a display and processing circuitry. The processing circuitry generates second image data by subtracting first image data before and after contrast enhancement. The processing circuitry removes information indicating a structure from pieces of the second image data to generate third image data. The processing circuitry correct misalignment of the third image data based on characteristics of the shape of the subject represented in at least any one of the first to third image data. The processing circuitry obtains a variation index between the third image data after alignment correction, and generates fourth image data base on the variation index. The processing circuitry displays a medical image based on the fourth image data on the display.

Abstract: According to one embodiment, a medical image processing apparatus includes an image data acquisition part, a range setting part and a blood vessel image generation part. The image data acquisition part receives one of X-ray contrast image and subtraction image, of an imaging region including blood vessels of an object. The subtraction image are generated by subtraction processing between the X-ray contrast image and non-contrast X-ray image. The range setting part sets a target range in the X-ray contrast image or subtraction image. The blood vessel image generation part derives time changes in concentrations of a contrast agent based on the X-ray contrast image or subtraction image, and generates blood vessel image having pixel values corresponding to times, at which concentrations of the contrast agent become a specific condition, within the target range and pixel values corresponding to concentrations of the contrast agent outside the target range.

Abstract: A radiation diagnosis apparatus according to an embodiment includes reconstructing circuitry. The reconstructing circuitry reconstructs three-dimensional medical agent distribution images in a time series from a group of acquired images acquired in the presence of a medical agent by an imaging system from directions in a range that makes it possible to reconstruct three-dimensional images of a subject, by performing an iterative reconstruction process that uses at least one selected from between spatial continuity of the medical agent and temporal continuity of the concentration of the medical agent as a constraint condition.

Abstract: In one embodiment, an X-ray diagnostic apparatus generating an object image by detecting X-rays having passed through an object includes: a display configured to display the object image; memory circuitry configured 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 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 displayed feature information items.

Abstract: An obtaining unit obtains, with respect to a plurality of groups of time-course fluoroscopic images that are obtained by acquiring a subject, in at least two directions, each of which intersect, first transition information that indicates transition of a signal intensity of a contrast media in a proximal region to which the contrast media flows earlier than a region of interest. A three dimensional reconstruction unit reconstructs three-dimensional image data in the region of interest such that a value that is obtained by projecting a voxel value approximates a value of a corresponding pixel in each of the groups of time-course fluoroscopic images, the voxel value being represented by second transition information that is obtained by deforming the first transition information with a factor that is related to the contrast media. A display displays the fluoroscopic image with a blood vessel image based on the three-dimensional image data.

Abstract: An X-ray diagnostic apparatus according to an embodiment includes an obtaining unit and a calculating unit. The obtaining unit is configured to, with regard to a plurality of X-ray images that are acquired with time by using a contrast media, obtains first transition information that indicates a time-course transition of a signal intensity of the contrast media in a region of interest that corresponds to a blood vessel and obtains second transition information that indicates a time-course transition of the signal intensity of the contrast media in a region to which the contrast media flows earlier than the region of interest. The calculating unit is configured to analyze the first transition information by using the second transition information to calculate blood flow information on each blood flow in the region of interest.

Abstract: According to one embodiment, an image processing device includes processing circuitry. The processing circuitry acquires a plurality of first image data indicating a plurality of time-sequential bloodstream images obtained after administering contrast agent to an object, and sets a target region on second image data. The second image data are generated based on the plurality of the first image data so as to indicate information on temporal change of pixel values of each pixel. Further, the processing circuitry selects a reproduction section by selecting at least reproduction-start image data and reproduction-end image data from the plurality of first image data based on bloodstream information of the target region.