A positron emission tomography (PET) scan is a noninvasive imaging technique used to get body organs and tissues images. The technique involves the use of a detectable and injectable dye having radioactive tracers. The radioactive tracer detects the abnormality in the body organ or tissues. The abnormal body organ absorbs a significant amount of the radioactive tracer,indicating a health issue.
Doctors see the abnormality with the help of a PET scanner. The diseased part will reflect as a bright spot on the scanner.
A positron emission tomography scan is an outpatient test, i.e., you can go home as soon as the procedure is done.