PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus which shortens a photographing interval of each fluoroscopic image.SOLUTION: The X-ray imaging apparatus 1 for photographing a plurality of fluoroscopic images to create a subtraction image from the difference of each fluoroscopic image includes: an X-ray tube 2 that irradiates a subject with X-rays an X-ray plane detector 4 that detects the X-rays having penetrated through the subject and an irradiation start time-calculating unit 9 that calculates a photographing start time of the first image based on the end time of an integral period of the X-ray plane detector 4 in the first image of radiography or the start time of the integral period of the X-ray plane detector 4 in the second image of radiography.COPYRIGHT: (C)2012,JPO&INPIT【課題】各透視画像の撮影間隔を短縮するX線撮影装置を提供する。【解決手段】複数枚の透視像を撮影して各透視像の差分からサブトラクション像を作成するX線撮影装置1において、被検体にX線を照射するX線管2と、被検体を透過したX線を検出するX線平面検出器4と、透視撮影1枚目におけるX線平面検出器4の積分期間の終了時期または透視撮影2枚目におけるX線平面検出器4の積分期間の開始時期を基に1枚目の撮影開始時期を算出する照射開始時期算出部9とを備える。【選択図】 図1
