X-ray photographic equipment.

摘要

An X-ray photographic equipment includes an assembly consisting of an X-ray tube (3) and an X-ray image pickup means (4, 5) with the body of a subject (1) disposed therebetween. The assembly is moved relative to the body of the subject along the direction of a contrast medium flowing in the body of the subject. A plurality of images are obtained every time the assembly is stopped. Video signals representing these images are processed, and a maximum value holding image (84) and a minimum value holding image (86) are found. A difference therebetween (87) represents an image of the blood vessel, which is free from an artefact caused by positional deviation.