Keywords: PetDiag2.jpg PET diagram The locations of positron decays within the patient are highlighted by the solid circles in the diagram In addition only a few detectors are shown in the diagram for reasons of clarity Each detector around the ring is operated in coincidence with a bank of opposing detectors and the annihilation gamma-rays thus detected are used to build up a single profile http //en wikibooks org/wiki/File PetDiag2 jpg 2006-06-11 Generated by Kieran Maher using OmniGraffle Positron emission tomography |