Abstract: An X-ray CT apparatus according to an embodiment includes an X-ray detector and a collimator unit. The X-ray detector detects X-rays that have passed through a subject. The collimator unit eliminates scattered radiation from X-rays that are incident on the X-ray detector. The collimator unit includes a plurality of collimator modules, a supporter, and a fixing unit. The plurality of collimator modules each includes a plurality of first collimator plates arranged in a grid along a channel direction and a slice direction that are orthogonal to each other. The supporter supports the collimator modules such that the collimator modules are aligned in a plurality of straight lines along the channel direction and in a plurality of straight lines along the slice direction. The fixing unit is provided to the supporter and fixes positions of the collimator modules in the channel direction and the slice direction.

Abstract: According to one embodiment, detector and DAS includes an X-ray detector, a board, a DAS, and a plurality of X-ray shielding plates. The X-ray detector detects X-rays and generates an electrical signal corresponding to the detected X-rays. The board is coupled to the X-ray detector and includes a wiring pattern to extract the electrical signal from the X-ray detector. The DAS is coupled to the board and included an electronic part to perform signal processing for the electrical signal. The X-ray shielding plates are provided for the board to prevent the electronic part from being exposed to X-rays transmitted through the X-ray detector. A portion of the wiring pattern is placed between the X-ray shielding plates.

Abstract: An X-ray detector of an X-ray CT apparatus has a collimator, a plurality of scintillators, a light reflector and a plurality of photodiodes. The collimator has a threshold plate with a thickness Wc to eliminate scattered radiation from an X-ray. The plurality of scintillators emit light based on the X-ray. The light reflector is provided in a gap between adjacent scintillators of the plurality of scintillators. The plurality of photodiodes convert the light of each of the plurality of scintillators into the electric signal. The thickness Wc of the threshold plate mounted on the X-ray incident side of the adjacent scintillators, and a thickness Ws of the gap has a relationship shown in a following expression: Wc?Ws.

Abstract: An image processing system according to an aspect includes a receiving unit, an estimating unit, a rendering processing unit, and a display controlling unit. The receiving unit receives an operation to apply a virtual force to a subject shown in a stereoscopic image. The estimating unit estimates positional changes of voxels contained in volume data, based on the force received by the receiving unit. The rendering processing unit changes positional arrangements of the voxels contained in the volume data based on a result of the estimation by the estimating unit and newly generates a group of disparity images by performing a rendering process on post-change volume data. The display controlling unit causes a stereoscopic display apparatus to display the group of disparity images newly generated by the rendering processing unit.

Abstract: According to one embodiment, a method is disclosed for manufacturing a collimator. The method can include forming a first plate-like part having a plurality of first slits. The method can include forming a second plate-like part having a plurality of second slits. The method can include causing the first slits and the second slits to face each other and assembling a plurality of the first plate-like parts and a plurality of the second plate-like parts so as to intersect each other. Portions of the second plate-like parts where the second slits are not provided are held on an opening side of the first slits. The second plate-like parts are inclined so as to follow an inclination of the first slits. The inclined second plate-like parts are moved toward a bottom of the first slits.

Abstract: According to one embodiment, detector and DAS includes an X-ray detector, a board, a DAS, and a plurality of X-ray shielding plates. The X-ray detector detects X-rays and generates an electrical signal corresponding to the detected X-rays. The board is coupled to the X-ray detector and includes a wiring pattern to extract the electrical signal from the X-ray detector. The DAS is coupled to the board and included an electronic part to perform signal processing for the electrical signal. The X-ray shielding plates are provided for the board to prevent the electronic part from being exposed to X-rays transmitted through the X-ray detector. A portion of the wiring pattern is placed between the X-ray shielding plates.

Abstract: In an image processing system according to an embodiment, an image processing device in the embodiment includes a receiving unit, a flat image generator, and an output unit. The receiving unit receives setting of a region of interest on parallax images of a subject that are displayed stereoscopically. The flat image generator generates a flat image of a cut surface of the subject that is generated by cutting the subject along a plane corresponding to the region of interest received by the receiving unit based on volume data of the subject stored in a predetermined storage device. The output unit outputs the flat image generated by the flat image generator.

Abstract: A high-resolution X-ray apparatus and a high-resolution X-ray detecting apparatus includes a plurality of multi-slice X-ray detection packs held on the pair of guide rails by detachable tight fitting members. A detachable pressing board is provided on the pair of guide rails for fixing the plurality of detection packs so that edges of adjacent detection packs contact each other.

Abstract: An X-ray CT apparatus according to an embodiment includes an X-ray detector and a collimator unit. The X-ray detector detects X-rays that have passed through a subject. The collimator unit eliminates scattered radiation from X-rays that are incident on the X-ray detector. The collimator unit includes a plurality of collimator modules, a supporter, and a fixing unit. The plurality of collimator modules each includes a plurality of first collimator plates arranged in a grid along a channel direction and a slice direction that are orthogonal to each other. The supporter supports the collimator modules such that the collimator modules are aligned in a plurality of straight lines along the channel direction and in a plurality of straight lines along the slice direction. The fixing unit is provided to the supporter and fixes positions of the collimator modules in the channel direction and the slice direction.

Abstract: An X-ray detector of an X-ray CT apparatus has a plurality of collimators, a plurality of scintillators, a plurality of photodiodes and a light guide. The plurality of collimators collimate an X-ray. The plurality of scintillators respectively emit fluorescence based on the X-ray from the plurality of collimators. The plurality of photodiodes respectively convert the fluorescence from the plurality of scintillators into the electric signal. The light guide has such a shape as to guide the fluorescence emitted from the plurality of scintillators respectively to the plurality of photodiodes while focusing the fluorescence toward the plurality of photodiodes.

Abstract: An X-ray detector of an X-ray CT apparatus has a collimator, a plurality of scintillators, a light reflector and a plurality of photodiodes. The collimator has a threshold plate with a thickness Wc to eliminate scattered radiation from an X-ray. The plurality of scintillators emit light based on the X-ray. The light reflector is provided in a gap between adjacent scintillators of the plurality of scintillators. The plurality of photodiodes convert the light of each of the plurality of scintillators into the electric signal. The thickness Wc of the threshold plate mounted on the X-ray incident side of the adjacent scintillators, and a thickness Ws of the gap has a relationship shown in a following expression: Wc?Ws.

Abstract: A high-resolution X-ray apparatus and a high-resolution X-ray detecting apparatus includes a plurality of multi-slice X-ray detection packs held on the pair of guide rails by detachable tight fitting members. A detachable pressing board is provided on the pair of guide rails for fixing the plurality of detection packs so that edges of adjacent detection packs contact each other.

Abstract: An X-ray computed tomography apparatus of this invention includes a first data detecting system which includes a first X-ray tube and a first X-ray detector and a second data detecting system which includes a second X-ray tube and a second X-ray detector. A reconstructing unit reconstructs image data on the basis of the data detected by at least one of the first and second data detecting systems. A monitoring unit monitors the first data detecting system. In a period during which the first data detecting system is normal, data acquisition is performed by both the first and second data detecting systems. In a period during which the first data detecting system is faulty, data acquisition is performed by the second data detecting system alone.

Abstract: An X-ray computed tomography apparatus of this invention includes a first data detecting system which includes a first X-ray tube and a first X-ray detector and a second data detecting system which includes a second X-ray tube and a second X-ray detector. A reconstructing unit reconstructs image data on the basis of the data detected by at least one of the first and second data detecting systems. A monitoring unit monitors the first data detecting system. In a period during which the first data detecting system is normal, data acquisition is performed by both the first and second data detecting systems. In a period during which the first data detecting system is faulty, data acquisition is performed by the second data detecting system alone.

Abstract: An X-ray computerized tomographic (CT) imaging apparatus which can achieve a multiple energy scanning system on a real time basis so that plural kinds of tomographic information can be obtained corresponding to plural types of energy characteristics. The X-ray CT imaging apparatus includes: an X-ray tube for irradiating an X-ray to a biological body under medical examination; a plurality of detection systems for detecting an X-ray energy transmitted through the biological body, in which the plural detection systems have different energy characteristics respectively; a data acquisition unit for acquiring respective transmission X-ray energy data of the biological body which are detected by the plural detection systems; and a reconstruction unit for reconstructing a tomographic image for the biological body in accordance with data from the data acquisition unit.