Positron emission tomography Quiz

Positron emission tomography is a nuclear medicine imaging technique which produces a three-dimensional image or picture of functional 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.

Images of tracer concentration in 3-dimensional or 4-dimensional space within the body are then reconstructed by computer analysis.

In modern scanners, this reconstruction is often accomplished with the aid of a CT X-ray scan performed on the patient during the same session, in the same machine.