Synonyms: Samarium Sm 153 lexidronam, Quadramet
Abbreviations: Sm, 153
(sa-MARE-ee-um) Abb: Sm 153. A radiopharmaceutical used to give palliative relief of bone pain. The radioactive samarium is taken up in the bone cancer area and gives off radiation. Half-life is 46 days. A US brand is Quadramet.