Patent ID: 7003072
Filing Date: 2006-02-21
Classification: A61B,G01S

Abstract:
1. A method for localizing a target in an object, comprising the acts of: generating a fan shaped X-ray beam by means of an X-ray source; scanning the fan shaped X-ray beam over the object thus projecting on the surface of an X-ray detector a shadow image of the object and of the target in it; translating and simultaneously rotating the X-ray beam during the scan of the X-ray beam, the translatory and rotational movements being connected in such a way that the shadow image of the target is kept on the surface of the detector during the scan; recording the orientation and the translatory position of the X-ray beam at at least two of its translatory positions during the scan and of the positions of the shadow image of the target on the surface of the detector; calculating the position of the target with respect to the surface of the detector from the translation positions of the X-ray beam, its corresponding orientations and the corresponding positions of the shadow image of the target.