Patent ID: 8905636

Claim:
An X-ray diagnostic apparatus comprising: an X-ray generation unit configured to generate an X ray with which a subject is to be irradiated; an X-ray detection unit including a detector and configured to create X-ray transmission information, the detector being configured to detect the X ray transmitted through the subject; an image creation unit configured to create an X-ray image on the basis of the X-ray transmission information; and an end-of-life detection unit configured to detect an end of life of the detector on the basis of an output value in the X-ray image, wherein the end-of-life detection unit includes a luminance-level-value computation unit configured to calculate an amount of X-ray irradiation of the detector on the basis of the output value in an area of interest which is set on any one of the X-ray image and the detector, an irradiation-amount accumulation unit configured to calculate an accumulated amount of irradiation in the area of interest by adding the amount of X-ray irradiation calculated by the luminance-level-value computation unit to a previous amount of X-ray irradiation in the area of interest, and an end-of-life judgment unit configured to make a judgment on the end of life of the detector on the basis of the accumulated amount of irradiation.