Positron emission tomography | 合法醫療器材資訊網

Positronemissiontomography(PET)isafunctionalimagingtechniquethatusesradioactivesubstancesknownasradiotracerstovisualizeandmeasure ...

Medical imaging technique

Positron emission tomography (PET)[1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption. Different tracers are used for various imaging purposes, depending on the target process within the body.

For example:

PET is a common imaging technique, a medical scintillography technique used in nuclear medicine. A radiopharmaceutical — a radioisotope attached to a drug — is injected into the body as a tracer. When the radiopharmaceutical undergoes bet...