In an improved CT scanner calibration method and apparatus, a radiation beam, for example an x-ray beam, is directed at a plurality of radiation detectors. The beam is attenuated by a phantom of known attenuation characteristics. The detectors generate measured attenuation data from the attenuated...http://www.google.fr/patents/US5774519?utm_source=gb-gplus-shareBrevet US5774519 - Method of and apparatus for calibration of CT scanners
Method of and apparatus for calibration of CT scanners
