X-ray diagnostic apparatus and a control program

The data generating unit (9) of an X-ray diagnostic device (100), which irradiates a site to be treated in a subject with X-rays and displays image data of transmitted X-rays, comprises: a catheter tip detecting unit (91) that detects the tip of a catheter on the basis of the image data; a tip position information storage unit (92) that stores, as movement path information, position information on the catheter tip for at least one heartbeat based on the detection result of the catheter tip detecting unit (91); and a support data generating unit (96) that generates catheter treatment support data by superimposing the movement path information on the current image data.