According to the X-ray imaging apparatus of the present invention, images are continuously shot while appropriately acquiring the timing at which the X-ray tube 3 in the inactive state is to be activated, thereby achieving both rapid sequential shooting and protection of the radiation source be able to. In other words, according to the configuration of the present invention, the difference time obtained by subtracting the time width of the activation period from the time width of the undetectable period is calculated, and the difference time from the time when the X-ray is irradiated to the time after the difference time Is determined as the timing to activate the X-ray tube 3. The time width of the undetectable period is the time width from when the FPD 4 detects X-rays to when it can detect the subsequent X-ray, and the time width of the activation period is the time width of the X-ray tube 3 Is the time width from the start of the start to the completion of the activation. By doing in this way, it is possible to perform continuous shooting of images quickly while simultaneously activating the X-ray tube 3 and preparing the detector, without excessive burden on the X-ray tube 3, the lifetime of the X-ray tube 3 Can be extended.本発明のX線撮影装置によれば、休止状態のX線管3を起動すべきタイミングを適切に取得しながら画像を連写することで、手早い連写と放射線源の保護とを両立することができる。すなわち、本発明の構成では、検出不可期間の時間幅から起動期間の時間幅を減算して得られた差分時間を算出しておき、X線が照射された時点から差分時間の経過後の時点をX線管3を起動させるタイミングと判別するのである。なお、検出不可期間の時間幅とは、FPD4が一度X線を検出してから後続のX線の検出が可能となるまでの時間幅であり、起動期間の時間幅とは、X線管3の起動開始から起動が完了するまでの時間幅である。この様にすることで、X線管3の起動と検出器の準備とを同時に行いながら素早く画像の連写ができ、X線管3に過度な負担がかからず、X線管3の寿命を伸ばすことができる。
