A method for obtaining registration of a three-dimensional image data set of an anatomical vessel with corresponding two-dimensional image data of the vessel in an X-ray imaging system, where the method comprise the user identifying two points on an anatomical vessel on at least two X-ray image planes,...http://www.google.com/patents/US20110033100?utm_source=gb-gplus-sharePatent US20110033100 - REGISTRATION OF THREE-DIMENSIONAL IMAGE DATA TO 2D-IMAGE-DERIVED DATA
