To allow a subject in a sitting position to easily leave a cradle in a short time in a medical image diagnostic apparatus which is configured to capture medical images of a subject in a sitting position.SOLUTION: The medical image diagnostic apparatus comprises: a cradle body 11 in which medical imaging is performed； a support unit for supporting the cradle body 11 such that the cradle body is movable in a substantially vertical direction relative to a floor surface； an acquisition unit for acquiring a first signal indicative of whether or not the movement of the cradle body 11 is allowed； a recognition unit for recognizing a chair, on which a subject sits, located in an imaging position for medical imaging in the cradle body 11； and a signal supply unit for supplying the first signal or a second signal corresponding to the first signal to the chair located in the imaging position.SELECTED DRAWING: Figure 2【課題】座位の被検体を医用撮像可能な医用画像診断装置において短時間且つ容易に被検体が架台から退避すること。【解決手段】医用画像診断装置は、医用撮像を行う架台本体１１と、架台本体１１を床面に対して略垂直方向に移動可能に支持する支持部と、架台本体１１の移動の可否を示す第１信号を取得する取得部と、架台本体１１による医用撮像のための撮影位置に配置された、被検体が座るための椅子を認識する認識部と、撮影位置に配置された椅子に、第１信号又は第１信号に対応する第２信号を供給する信号供給部と、を具備する。【選択図】図２
