Abstract: An X-ray CT system according to the invention includes a holding plate which holds X-ray shield plates, a first support plate which supports one short-directional end portion of the holding plate, the first support plate conforming to a bend of the holding plate, a second support plate which supports another short-directional end portion of the holding plate, the second support plate conforming to the bend of the holding plate, and grooves continuously formed on the respective components when the holding plate, the first support plate, and the second support plate are assembled.

Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at least three sides.

Abstract: The angle of each collimator plate with respect to an X ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X ray detector side in a corresponding groove of an abutment plate provided on the X ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate on at least three sides.

Abstract: An X-ray CT apparatus includes an X-ray tube configured to emit X-rays, a detector faced against the X-ray tube, the detector having a detector element with a plurality of slots and a plurality of a collimator boards inserted into the slots, a data acquisition system configured to receive data detected by the detector, a computer unit configured to reconstitute the data from the data acquisition system and a display configured to show images by the data.

Abstract: An X-ray CT apparatus includes an X-ray tube configured to emit X-rays, a detector faced against the X-ray tube, the detector having a detector element with a plurality of slots and a plurality of a collimator boards inserted into the slots, a data acquisition system configured to receive data detected by the detector, a computer unit configured to reconstitute the data from the data acquisition system and a display configured to show images by the data.

Abstract: An X-ray CT system according to the invention includes a holding plate which holds X-ray shield plates, a first support plate which supports one short-directional end portion of the holding plate, the first support plate being provided in the manner of following the holding plate, a second support plate which supports the other short-directional end portion of the holding plate, the second support plate being provided in the manner of following the holding plate, and grooves continuously formed on the respective components in a state that the holding plate, the first support plate, and the second support plate are assembled.

Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at at least three sides.

Abstract: A coarse/fine movement aligning apparatus of this invention includes a coarse movmeent driver for coarsely moving an object to be aligned, a fine adjustment for finely adjusting the object to be aligned, a position detector for detecting the position of the object to be aligned, a coarse/fine movement controller for selectively and simultaneously operating the coarse movment driver and the fine adjustment on the basis of a difference between the detection position obtained by the position detector and the target position of the object to be aligned, and an ultrafine movement controller for ultrafinely operating the fine adjustment to cause the object to be aligned to coincide with the target position.