Patent ID: 6944267

Claim:
An X-ray image diagnostic device comprising an X-ray source for irradiating X-rays onto an object to be examined, an X-ray plane detector placed opposite to the X-ray source for outputting X-ray image data corresponding to X-rays transmitted through the object, image storage means for storing the X-ray image data output from the X-ray plane detector as digital data, and sensitivity correcting means for performing sensitivity correction on the X-ray image data stored in the image storage means, wherein said sensitivity correcting means comprises sensitivity-information-acquisition controlling means for commanding that X-ray irradiation from said X-ray source be synchronized with readout of the X-ray image data from the X-ray plane detector, sensitivity-information calculating means for calculating sensitivity information for a plurality of readout channels of the X-ray plane detector using the X-ray image data read out synchronously with X-ray irradiation, and sensitivity-information storage means for storing the sensitivity information calculated by the calculating means.