PROBLEM TO BE SOLVED: To appropriately carry out radiography even when accelerating/decelerating a radiation source of an X-ray tube or the like in carrying out tomosynthesis radiography.SOLUTION: The X-ray tube is accelerated from a resting state to a predetermined constant speed (an accelerating section a, 0&let(time)&leT1) when moving in the moving range, to move at a constant speed for a predetermined time (a constant speed section b, T1&let&leT1+T) and then decelerated to stop (a decelerating section c, T1+T&let&le2×T1+T). At this time, the exposure timing of X-rays from the X-ray tube is set so that the intervals of irradiation positions for irradiating a subject with X-rays are constant.COPYRIGHT: (C)2012,JPO&INPIT【課題】トモシンセシス撮影を行う際に、X線管等の放射線源の加減速時にも適切に撮影を行う。【解決手段】X線管は、その移動範囲を移動する際に、静止状態からあらかじめ定められた定速度まで加速し(加速区間a、0≦t(時間)≦T1))、所定時間定速度で移動し(定速区間b、T1≦t≦T1+T)、その後に減速して停止する(減速区間c、T1+T≦t≦2×T1+T)。この際、被写体にX線を照射する照射位置の間隔が一定となるように、X線管からのX線の曝射タイミングを設定する。【選択図】図2
