Patent ID: 6404850
Filing Date: 2002-06-11
Classification: A61B,G06T

Abstract:
An x-ray diagnostic apparatus for cardioangiography, comprising:an x-ray source which emits an x-ray beam which is adapted to penetrate a subject having a beating heart; an x-ray detector on which x-rays are incident after penetrating said examination subject, said x-ray detector generating electrical signals corresponding to the x-rays incident thereon; an image processing arrangement for producing a visible image from said electrical signals; a mount for said x-ray source and a said radiation detector for cyclically moving said x-ray source and said radiation detector during production of a plurality of successive images including a vessel exhibiting motion due to heartbeats; and a cardiac motion compensation unit which supplies a signal to said image processing arrangement representing only a selected small region of each of said plurality of successive images to compensate for motion of said vessel in said selected small region due to heartbeats.