What's a Radioactive Tracer?

A radioactive tracer, radiotracer, or radioactive label, is a chemical compound in which one or more atoms have been replaced by a radionuclide so by virtue of its radioactive decay it can be used to ...

How does a radioactive tracer work?

Radioactive tracers are used in imaging tests that help find problems inside the body. These tracers give off particles that can be detected and turned into a picture to help find problems in organs or other structures. The tracer is usually given through an intravenous (IV) line placed in a vein.

What is a radioactive tracer in medicine?

Diagnostic techniques in nuclear medicine use radioactive tracers which emit gamma rays from within the body. These tracers are generally short-lived isotopes linked to chemical compounds which permit specific physiological processes to be scrutinized. They can be given by injection, inhalation, or orally.