Medical Definition of Radioactive tracer
1.
A radioisotope is an element which has the same atomic number as another but a different atomic weight, exhibiting the property of spontaneous decomposition.
Decomposition gives off radiation (gamma rays) that can be detected with a counter. If a radioisotope is attached to a biological compound and injected into the body, its path may be traced through the body (resulting in an image).
(27 Sep 1997)
Lexicographical Neighbors of Radioactive Tracer
Other Resources:
