PROBLEM TO BE SOLVED: To provide an X-ray CT device having a thin frame with an opening of a large diameter.SOLUTION: The X-ray CT device sets a subject through the opening of the frame in a direction of the subjects body, rotates an X-ray tube and an X-ray detection part, which are opposedly arranged at the center of the opening, around the subject, acquires a photographed image based on the X-ray that is emitted from the X-ray tube, transmits through the subject, and is detected by the X-ray detection part, and includes a rotation ring and a bearing. The rotation ring is formed to be ring-shaped so as to extend along the openings circumferential direction and are provided with the X-ray tube and the X-ray detection part on an inner peripheral surface of the same. The bearing is provided between the outer peripheral surface side of the rotation ring and the frame, and supports the rotation ring so as to rotate it in a circumferential direction of the opening.COPYRIGHT: (C)2013,JPO&INPIT【課題】大口径の開口が設けられた薄型の架台を有するX線CT装置を提供する。【解決手段】X線CT装置は、架台の開口に被検体を体軸方向に通し、開口中心に対向配置されたX線管及びX線検出部を被検体の体軸回りに回転させ、X線管から照射され、被検体を透過しX線検出部により検出されたX線を基に撮影画像を取得し、回転リング及びベアリングを有する。回転リングは、開口の周方向に沿うようにリング状に形成され、その内周面側にX線管及びX線検出部が設けられる回転リングと、ベアリングは、回転リングの外周面側と前記架台との間に設けられ、回転リングを開口の周方向に回転させるように支持する。【選択図】図1
