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Positron emission tomography Quiz
Positron emission tomography is a nuclear medicine, functional imaging technique that is used to observe metabolic processes in the body.
The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide , which is introduced into the body on a biologically active molecule.
Three-dimensional images of tracer concentration within the body are then constructed by computer analysis.
In modern PET-CT scanners, three dimensional imaging is often accomplished with the aid of a CT X-ray scan performed on the patient during the same session, in the same machine.