PROBLEM TO BE SOLVED: To prepare for image processing of a still image during fluoroscopic photography without using identical image processing for still images and video images.SOLUTION: During X-ray exposure (A), pulse exposures for fluoroscopic photography are carried out three times with predetermined intervals as fluoroscopic exposures A1, A2 and A3, and a pulse exposure A4 for still photography is carried out once after the pulse exposures for fluoroscopic photography. During image processing (C), video image processing operations C1, C2 and C3 are carried out during the intervals of fluoroscopic exposures by fixing the timings of the processing operations to those of the X-ray exposure (A). A still image parameter generating section then acquires still image processing parameters C4, C5 and C6 using remaining time periods as time to generate parameters for a still image. Because the still image processing parameters C4, C5 and C6 are already acquired when a still image processing section carries out a still image processing operation C7, the processing speed is improved and an X-ray photography section can start a next fluoroscopic photography smoothly.COPYRIGHT: (C)2008,JPO&INPIT【課題】静止画像処理と動画像処理とを同じものを利用することなく、静止画像処理用のそれぞれの画像処理の準備を透視撮影中に行う。【解決手段】X線曝射(A)では、或る一定の間隔で透視撮影用のパルス曝射が、透視用曝射A1、A2、A3として3度行われ、その後に静止画撮影用のパルス曝射A4が1度行われている。このX線曝射(A)のタイミングに合わせて、本実施例の画像処理(C)では、透視用の曝射間で動画像処理C1、C2、C3を当てて、余った時間を静止画用のパラメータ作成時間として、静止画像パラメータ作成部は静止画像処理パラメータ作成C4、C5、C6を行う。静止画像処理部が静止画像処理C7を行う際には、既に静止画像処理パラメータC4、C5、C6が作成されているので、その分だけ処理速度が向上し、X線撮影部は次の透視撮影を円滑に開始できる。【選択図】図4
