Problem to be solved: to provide an X-ray CT apparatus capable of assisting the attachment and removal of the accessories of the top plate at a predetermined retracted position.The X-ray CT apparatus according to one embodiment of the present invention comprises a frame, a bed, and a control part. The frame has a housing and an inclination angle adjusting mechanism for adjusting the inclination angle of the housing. The bed includes a top plate for detachably supporting the accessories, a transfer mechanism for transporting the top plate in the longitudinal direction, and a lifting mechanism for lifting and lowering the top plate.The control section determines that the attachment and removal conditions of the accessories are satisfied in the case where there is an indication that the top plate is at a predetermined retracted position or if it is instructed to move to a predetermined retreat position, and the distance in the longitudinal direction between the housing and the top plate at a predetermined retreat position is greater than or equal to a predetermined distance from which the accessories can be attached or detached The separation angle control of the frame of the frame through the inclination angle adjusting mechanism and the movement control of the top plate through at least one of the transfer mechanism and the lifting mechanism are controlled to be separated.Diagram【課題】所定の退避位置における天板の付属品の着脱を支援することができるX線CT装置を提供する。【解決手段】本発明の一実施形態に係るX線CT装置は、架台と、寝台と、制御部とを備える。架台は、筐体と、筐体の傾斜角を調整する傾斜角調整機構とを有する。寝台は、付属品を着脱可能に支持するとともに被検体を載置するための天板と、天板を長手方向に移送する移送機構と、天板を昇降させる昇降機構とを有する。制御部は、天板が所定の退避位置にある場合または所定の退避位置に移動すべき旨の指示があった場合のいずれかの場合に付属品の着脱条件が満たされたと判断し、所定の退避位置における筐体と天板との長手方向の距離が付属品を着脱可能な所定距離以上に離間するように、傾斜角調整機構を介した架台の筐体の傾斜角制御と、移送機構および昇降機構の少なくとも一方を介した天板の移動制御と、の少なくとも一方の離間制御を行なう。【選択図】 図1
