Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a projection data generation circuitry, a setting circuitry, and a scan start timing determination circuitry. The setting circuitry configured to set a region of interest on a slice image generated by a first scan for the object. The scan start timing determination circuitry configured to determine, based on a plurality of projection data values of interest corresponding to the region of interest out of the projection data values generated by a second scan at a dose lower than that in the first scan, a timing of terminating the second scan and starting a third scan at a dose higher than that in the second scan.

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: There are provided a file search system and program that perform efficient searches by creating, with respect to a file search environment where files for which a full-text search should be allowed and files for which a full-text search is unnecessary coexist, different index files. With respect to a file search system in which a file search server, a file server and a client are interconnected via a communications line 9, the file search server 1 comprises: metadata search means adapted to select, upon receiving a search request from the client 3, metadata matching records from an index 2 file based on a conditional search expression; full-text search means adapted to perform a search with respect to an index 1 file by referencing keywords based on the conditional search expression and the metadata matching records; and means adapted to transmit the search result to the client 3.