Abstract: Techniques are provided that enable displaying of medical images that depict cyclic motions in the subject. An X-ray CT system scans, with X-rays, the subject whose targeted region is experiencing a cyclic motion and acquires detection data. This X-ray CT system comprises a reconstruction processor, a moving image creator, and a display controller. The reconstruction processor generates a plurality of sets of volumetric data based on a plurality of sets of detection data that have been acquired during one cycle of the cyclic motion. The moving-image creator creates a moving image that shows the cyclic motion, on the basis of at least a part of the plural sets of volumetric data. The display controller superposes the moving image over an image based on the volumetric data and displays these images on the display unit.

Abstract: The disclosure relates to an X-ray computed tomography apparatus that includes an X-ray tube, an X-ray detector, preprocessing circuitry, a reconstruction processor, and control circuitry. The X-ray detector is configured to detect X-rays generated from the X-ray tube. The preprocessing circuitry is configured to generate projection data by executing preprocessing for data acquired by the X-ray detector based on a preprocessing condition. The reconstruction processor is configured to generate image data by executing reconstruction processing for the projection data based on a reconstruction condition. The control circuitry is configured to cause a storage to store the projection data in association with the preprocessing condition, and to read out the projection data based on a designated preprocessing condition.

Abstract: An X-ray computed tomography (CT) apparatus according to an embodiment includes processing circuitry. The processing circuitry causes a CT image designated as a display object image to be displayed on a display, every time any of a plurality of reconstructed CT images is designated as the display object image. The processing circuitry causes a newly reconstructed enlarged CT image to be displayed on the display when the processing circuitry receives an enlargement instruction to enlarge the CT image displayed on the display. The processing circuitry performs preprocessing on raw data corresponding to the CT image designated as the display object image, every time any of the CT images is designated as the display object image. The processing circuitry reconstructs the enlarged CT image using the preprocessed raw data, based on the enlargement instruction, when the processing circuitry receives the enlargement instruction.

Abstract: According to an embodiment, X-ray CT apparatus includes X-ray generator includes X-ray tube, high-voltage generator, detector, controller and circuitry. High-voltage generator generates tube voltage to be applied to X-ray tube. Detector detects X-rays irradiated from X-ray tube and transmitted through a subject. Controller controls high-voltage generator to scan the subject with first radiation dose and with second radiation dose lower than first radiation dose. Circuitry generates first image based on projection data acquired by scan at first radiation dose, generates second image based on projection data acquired by scan at second radiation dose, and displays first image and second image in common window.

Abstract: According to one embodiment, a medical imaging diagnosis apparatus includes a top-plate, a bed, a first gantry, a second gantry and a moving assembly. The top-plate places a subject thereon. The bed supports the top-plate. The first gantry includes an X-ray generator and an X-ray detector which revolve around the top-plate. The second gantry includes a gamma ray detector which detects gamma rays emitted from the subject. The moving assembly moves, based on a first position indicative of a center position of an effective view field in the first gantry and a second position indicative of a center position of an effective view field in the second gantry, the top-plate relative to the second position.

Abstract: A medical imaging apparatus includes a reconstruction unit, a ROI setting unit, and a controller. The reconstruction unit receives projection data that is based on radiation detected by a detector, divides the projection data into a plurality of subsets, and apply a reconstruction process to the subsets by successive approximation to successively generate images. The ROI setting unit sets a ROI in the images. The controller obtains a variation value indicating a change in image quality from the images, and, when the variation value reaches a predetermined value, instructs the reconstruction unit on a new subset count less than the number of the subsets to sequentially reconstruct subsets as many as the new subset count into an image. The reconstruction unit assigns a weight to the projection data based on the ROI, and divides the projection data into the subsets based on the weight.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, preprocessing circuitry, a reconstruction processor and control circuitry. The X-ray detector configured to detect X-rays generated from the X-ray tube. The preprocessing circuitry configured to generate projection data by executing preprocessing for data acquired by the X-ray detector, based on a preprocessing condition. The reconstruction processor configured to generate image data by executing reconstruction processing for the projection data based on a reconstruction condition. The control circuitry configured to cause a storage to store the projection data in association with the preprocessing condition and read out, based on a designated preprocessing condition.

Abstract: An X-ray computed tomography (CT) apparatus according to an embodiment includes processing circuitry. The processing circuitry causes a CT image designated as a display object image to be displayed on a display, every time any of a plurality of reconstructed CT images is designated as the display object image. The processing circuitry causes a newly reconstructed enlarged CT image to be displayed on the display when the processing circuitry receives an enlargement instruction to enlarge the CT image displayed on the display. The processing circuitry performs preprocessing on raw data corresponding to the CT image designated as the display object image, every time any of the CT images is designated as the display object image. The processing circuitry reconstructs the enlarged CT image using the preprocessed raw data, based on the enlargement instruction, when the processing circuitry receives the enlargement instruction.

Abstract: According to an embodiment, X-ray CT apparatus includes X-ray generator includes X-ray tube, high-voltage generator, detector, controller and circuitry. High-voltage generator generates tube voltage to be applied to X-ray tube. Detector detects X-rays irradiated from X-ray tube and transmitted through a subject. Controller controls high-voltage generator to scan the subject with first radiation dose and with second radiation dose lower than first radiation dose. Circuitry generates first image based on projection data acquired by scan at first radiation dose, generates second image based on projection data acquired by scan at second radiation dose, and displays first image and second image in common window.

Abstract: A medical imaging apparatus includes a reconstruction unit, a ROI setting unit, and a controller. The reconstruction unit receives projection data that is based on radiation detected by a detector, divides the projection data into a plurality of subsets, and apply a reconstruction process to the subsets by successive approximation to successively generate images. The ROI setting unit sets a ROI in the images. The controller obtains a variation value indicating a change in image quality from the images, and, when the variation value reaches a predetermined value, instructs the reconstruction unit on a new subset count less than the number of the subsets to sequentially reconstruct subsets as many as the new subset count into an image. The reconstruction unit assigns a weight to the projection data based on the ROI, and divides the projection data into the subsets based on the weight.

Abstract: According to one embodiment, a medical imaging diagnosis apparatus includes a top-plate, a bed, a first gantry, a second gantry and a moving assembly. The top-plate places a subject thereon. The bed supports the top-plate. The first gantry includes an X-ray generator and an X-ray detector which revolve around the top-plate. The second gantry includes a gamma ray detector which detects gamma rays emitted from the subject. The moving assembly moves, based on a first position indicative of a center position of an effective view field in the first gantry and a second position indicative of a center position of an effective view field in the second gantry, the top-plate relative to the second position.

Abstract: Techniques are provided that enable displaying of medical images that depict cyclic motions in the subject. An X-ray CT system scans, with X-rays, the subject whose targeted region is experiencing a cyclic motion and acquires detection data. This X-ray CT system comprises a reconstruction processor, a moving image creator, and a display controller. The reconstruction processor generates a plurality of sets of volumetric data based on a plurality of sets of detection data that have been acquired during one cycle of the cyclic motion. The moving-image creator creates a moving image that shows the cyclic motion, on the basis of at least a part of the plural sets of volumetric data. The display controller superposes the moving image over an image based on the volumetric data and displays these images on the display unit.

Abstract: A medical image diagnostic apparatus according to an embodiment includes a simplified positron emission computed tomography (PET) image data generating unit, a PET image data generating unit, and a display. The simplified PET image data generating unit generates simplified PET image data based on information obtained by projecting the position of a generation source of a gamma ray emitted from a subject to whom a radioisotope is administered onto a predetermined projection surface in a predetermined direction. The PET image data generating unit generates, based on an evaluation result of the simplified PET image data, PET image data by using projection data in the PET imaging mode generated based on a detection result of the gamma ray emitted from the subject. The display displays the simplified PET image data and the PET image data.

Abstract: In an X-ray CT scanner having an X-ray tube which applies an X-ray spreading in a body axis direction of a subject, and an X-ray detector having a wide imaging range which detects the X-ray passed through the subject and converts the detected X-ray into an electric signal, a desired image creation time is set by use of a specific CT value curve in a console input unit before scanning with the X-ray. After the scanning, data of the CT value change curve is generated based on the obtained projection data. An image creation range in the generated change curve is determined based on an image creation range set in the console input unit, and the image creation is performed in the image creation unit based on the determined image creation time.

Abstract: In an X-ray CT scanner having an X-ray tube which applies an X-ray spreading in a body axis direction of a subject, and an X-ray detector having a wide imaging range which detects the X-ray passed through the subject and converts the detected X-ray into an electric signal, a desired image creation time is set by use of a specific CT value curve in a console input unit before scanning with the X-ray. After the scanning, data of the CT value change curve is generated based on the obtained projection data. An image creation range in the generated change curve is determined based on an image creation range set in the console input unit, and the image creation is performed in the image creation unit based on the determined image creation time.