A radiation therapy system that includes a radiation source that moves about a path and directs a beam of radiation towards an object and a cone-beam computer tomography system. The cone-beam computer tomography system includes an x-ray source that emits an x-ray beam in a cone-beam form towards an object...http://www.google.de/patents/US20060050847?utm_source=gb-gplus-sharePatent US20060050847 - Cone beam computed tomography with a flat panel imager
