Radiopharmaceuticals are defined as a compound that includes a radioactive isotope and a carrier, where the radioactive isotope can be introduced into the body in various ways, such as ingestion, injection, or inhalation as a gas.

Radiopharmaceuticals are used in the field of nuclear medicine for diagnostics, studying issues such as lung ventilation assessment, heart blood supply imaging, kidney, and brain imaging, as well as the treatment of certain diseases.