The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2008
Filed:
Apr. 04, 2007
Stephan Erbel, Munich, DE;
Stephan Erbel, Munich, DE;
BrainLAB AG, Feldkirchen, DE;
Abstract
A non-diagnostic, stereoscopic x-ray tracking apparatus and method for tracking moving objects in the context of radiotherapy and radiosurgery includes using two x-ray tubes to alternately and repeatedly record x-ray images of an object along two different viewing lines through the target area of an irradiating apparatus. The viewing lines intersect at a known angle, wherein an extrapolated object trajectory is ascertained by determining surfaces and intersecting points. Further, a minimum transversal from the object trajectory onto a current viewing line is ascertained, wherein the three-dimensional position of the tracked object is approximated at the point at which the object trajectory meets the viewing line.