Positron Emission Tomography

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PET (positron emission tomography )is a nuclear imaging technique that involves the use of radioisotope tracers which can probe disease specific biochemical processes, thus providing functional and metabolic information. Radioisotopes that emit two high-energy photons upon decay are detected by PET scanners, with most PET tracers having relatively short half-lives.While PET has limited spatial resolution, co-registration with CT provides high spatially resolved anatomical information, leading to better reconstruction of PET images by improved attenuation and scatter correction. The UCD Preclinical Molecular Imaging Facility houses a state-of-the-art Triumph PET/CT dual-modality imaging system with a PET spatial resolution of ~1.2-2mm and a CT spatial resolution 50-180μm.