title: SMN highlights as history: 1984.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging*; D049673:History, 20th Century; D006801:Humans; D007457:Iodine Radioisotopes / Q000266:history*; D019275:Radiopharmaceuticals / Q000266:history; D012955:Societies, Medical / Q000266:history; D014055:Tomography, Emission-Computed / Q000266:history*; D014481:United States
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals