Patent ID: 8345823

Claim:
An X-ray image diagnosing apparatus comprising: a radiating unit configured to radiate X-rays; a placement unit which is placeable an object; a detecting unit configured to detect X-rays that passed through the object; a supporting unit configured to support the radiating unit and the detecting unit in opposing relationship across the placement unit; a moving control unit configured to relatively move the supporting unit and the object on a longwise direction of the placement unit so as to perform an X-ray imaging at different imaging positions along the longwise direction; an obtaining unit configured to obtain X-ray image by performing the X-ray imaging; a calculating unit configured to calculate blood-vessel data indicating at least one of diameters and concentrations of blood vessels on the basis of the X-ray image, and to calculate a frame rate on the basis of the blood-vessel data; and a frame rate control unit configured to change the frame rate on the X-ray imaging.