X−RAY IMAGE DIAGNOSING DEVICE,AND X−RAY IMAGE DATA CORRECTING METHOD

摘要

An X−ray image diagnosing device comprising a sensitivity information acquisition control means for giving a command so that irradiation of X−ray from an X−ray source is synchronized with reading of X−ray image data from an X−ray plane detector for sensitivity correction. When calculating sensitivity information of the X−ray plane detector by using the intensity of the X−ray applied onto the X−ray plane detector and the intensity of the X−ray detected by the X−ray plane detector, reading of the X−ray plane detector is synchronized with X−ray irradiation, and sensitivity information corresponding to the change of the irradiation of the X−ray applied onto the X−ray plane detector within the reading time is calculated by using data for each reading channel. Sensitivity information for accurate sensitivity correction can be obtained from one output image. This sensitivity information is stored in a sensitivity information storing means, and used for correcting the sensitivity of the X−ray image data acquired by the actual image pickup.