PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus which can photograph X-ray images by X rays of different energies by effectively utilizing the variation of the energy of an X ray under one radiation of the X ray.SOLUTION: The X-ray imaging apparatus is constituted as follows. A photographing section 21 can continuously photograph the X ray image expressed by the radiated X ray by a plurality of times. By controlling the photographing section, the photographing of X ray images is performed respectively individually in at least two periods of a rising period T1, a photographing energy period T2, and a falling period T3. In this case, in the rising period, the X ray when the radiation by the X ray is performed one time rises to a photographing energy in response to a tube voltage determined as the exposure condition. In the photographing energy period, the X ray is maintained at the photographing energy. In the falling period, the X ray falls from the photographing energy.COPYRIGHT: (C)2012,JPO&INPIT【課題】1回の放射線の照射での放射線のエネルギーの変化を有効活用して、異なるエネルギーの放射線による放射線画像を撮影できる放射線撮影装置を提供する。【解決手段】照射される放射線により表わされる放射線画像を複数回続けて撮影可能な撮影部21を制御して、放射線が1回照射される際の放射線が曝射条件として定められた管電圧に応じた撮影エネルギーに立ち上がる立上期間T1、放射線が前記撮影エネルギーに維持された撮影エネルギー期間T2、及び放射線が前記撮影エネルギーから立ち下がる立下期間T3のうち少なくも2つの期間でそれぞれ個別に放射線画像の撮影を行う。【選択図】図13
