PROBLEM TO BE SOLVED: To provide an X-ray computed tomographic apparatus in which a rack can be moved horizontally and a vertically.SOLUTION: An X-ray computed tomographic apparatus 1 according to the embodiment comprises a rail 101 and a rack moving mechanism 103. The rail 101 includes: a first range which enables a subject to be photographed in a state of a lying posture and which is disposed along a horizontal direction and a second range which enables the subject to be photographed in a state of a standing or sitting posture, and the rail 101 is disposed along the vertical direction from the horizontal direction. The rack moving mechanism 103 can be moved on the rail 101 and mounts a rack 10.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】水平方向および鉛直方向に架台を移動可能なX線コンピュータ断層撮影装置の提供。【解決手段】本実施形態に係るX線コンピュータ断層撮影装置1は、被検体を臥位状態で撮影可能であって水平方向に沿った第1範囲と、前記被検体を立位または座位状態で撮影可能であって鉛直方向に沿った第2範囲とを含み、前記水平方向から前記鉛直方向に沿って配置されたレール101と、前記レール101上を移動可能であって、架台10を搭載する架台移動機構103と、を具備する。【選択図】 図1