subject: Low cost Whole Body PET Scan Abroad [print this page] In a PET scan imaging technique, a radioactive material called the radiotracer is injected into the body, which accumulates around the organ which has to be examined. The tracer releases gamma rays (which are detected by a gamma camera), and provide details of the internal organs and upon the metabolic or chemical activity. The concentration of the radioactive material depends upon the metabolic activity, hence helps staging and identifies the correct location of the tumor.
