PROBLEM TO BE SOLVED: To safely and easily control motion including right-left motion of a bed in an X-ray CT apparatus.SOLUTION: When a bed control part 19 received an instruction of up-down motion, front-rear motion, or right-left motion of a top plate 21 from an operator, height H of the top plate 21, a motion amount ZC in the front-rear direction, and a motion amount XL in the right-left direction at the time point are respectively acquired. Based on the acquired motion amounts, it is determined whether or not the top plate 21 can be moved in respective directions, to control the motion of the top plate 21. On the other hand, when the bed control part 19 received the instruction of motion of an auto-home function from the operator, the height H of the top plate 21, the motion amount ZC in the front-rear direction, and the motion amount XL in the right-left direction at the time point are respectively acquired, and, based on the acquired motion amounts, the motion of the top plate 21 in the up-down direction, the front-rear direction, and the right-left direction are controlled to automatically move the top plate 21 to the home position.COPYRIGHT: (C)2012,JPO&INPIT【課題】X線CT装置において、寝台の左右動を含めた動作を安全かつ容易に制御する。【解決手段】寝台制御部19が、操作者から天板21の上下動、前後動または左右動の指示を受け付けた場合に、その時点での天板21の高さH、前後方向の移動量ZC、および、左右方向の移動量XLをそれぞれ取得し、取得した移動量に基づいて、各方向に天板21を移動できるか否かを判定して、天板21の動作を制御する。また、寝台制御部19が、操作者からオートホーム機能の動作の指示を受け付けた場合に、その時点での天板21のその時点での天板21の高さH、前後方向の移動量ZC、および、左右方向の移動量XLをそれぞれ取得し、取得した移動量に基づいて、天板21の上下方向、前後方向および左右方向の動作を制御し、天板21を自動的にホームポジションまで移動する。【選択図】 図3
