title: Artificially prepared radioactive isotopes as a means of administering radiation therapy.
mesh_terms: D007554:Isotopes; D011851:Radioactivity / Q000628:therapy*; D011868:Radioisotopes; D011878:Radiotherapy
chemical_list: D007554:Isotopes; D011868:Radioisotopes
keywords: ISOTOPES; RADIOACTIVITY/therapy; RADIOTHERAPY