A radioactive tracer, also known as a radiotracer, is a substance that contains a small amount of radioactive material. It is used in the field of nuclear medicine to diagnose and monitor various medical conditions. The radiotracer is typically injected, ingested, or inhaled into the body, where it accumulates in specific organs or tissues. Special cameras, such as gamma cameras or PET scanners, then detect the radiation emitted by the tracer to create detailed images of the internal structures.
