Patent ID: 7715528
Filing Date: 2010-05-11
Classification: A61B

Abstract:
1. An X-ray diagnostic apparatus having an X-ray emitting device for emitting X-rays to a patient, and an X-ray detecting device for detecting X rays transmitted through the patient and outputting X-ray detection signals, the X-ray diagnostic apparatus comprising a non-injection image acquiring device for processing X-ray detection signals from the X-ray detecting device in a state where an angiographic contrast material is not injected, to acquire a non-injection image in an angiographic contrast material non-injection state; an injection image acquiring device for processing X-ray detection signals from the X-ray detecting device in a state where the angiographic contrast material has been injected, to acquire an injection image in an angiographic contrast material injection state; a blood vessel locus image acquiring device for acquiring a blood vessel locus image based on the non-injection image acquired by the non-injection image acquiring device and the injection image acquired by the injection image acquiring device; a radiation quality control device for controlling an energy distribution of the X rays emitted from the X-ray emitting device to the X-ray detecting device; an image superposing device for superimposing an X-ray image resulting from processing of X-ray detection signals from the X-ray detecting device based on the X rays controlled by the radiation quality control device in a state of a guide wire being inserted, on the blood vessel locus image acquired by the blood vessel locus image acquiring device; and a composite image display device for displaying a composite image superimposed by the image superposing device.