PROBLEM TO BE SOLVED: To reduce the risk of a subject sliding down from a bed even when the subject lets go of a hand hold.SOLUTION: An X-ray diagnostic apparatus comprises: a bed installed in an examination room a top board on which a subject lying on the bed is placed a bed movement mechanism for operating so that a head side of the bed is upward inclined or the head side of the bed is downward reversely inclined a top board movement mechanism for sliding and moving the top board in a longitudinal direction while keeping the subject lying on it and a distance sensor for measuring a distance from a head-side tip end of the top board to a wall of the examination room. When the bed movement mechanism reversely inclines the bed, the top board movement mechanism moves the top board so that the distance measured by the distance sensor becomes an interval at which the subject does not slide down.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】被検体が握り棒を放した場合でも、寝台から被検体が滑落する危険性を低減させる。【解決手段】X線診断装置は、検査室内に設置された寝台と、前記寝台上に横たえた被検体を載置するための天板と、前記寝台の頭側を上方に傾斜するように動作させ、又は下方に逆傾斜するように動作させる寝台移動機構と、前記被検体を載せたまま前記天板を長手方向にスライド移動させる天板移動機構と、前記天板の頭側先端から前記検査室の壁までの距離を測定する距離センサと、を有し、前記寝台移動機構が前記寝台を逆傾斜させたときに、前記距離センサで測定した距離が前記被検体を滑落させない間隔となるように、前記天板移動機構が前記天板を移動させる、ことを特徴とする。【選択図】図1
