Radiopharmaceuticals labelled with halogen isotopes: general introduction

Radioisotopes labelled with halogen isotopes have been used since 1939 for te investigation of human thyroid disease. Today they are used widely for research using positron computed tomography, and gamma scintiscanning. This introduction is concerned mainly with the uses of fluorine, bromine and iodine-labelled compounds e.g. 2-fluoro-deoxy-glucose and L-6-fluorodopa and the gamma emitting isotopes and their use in positron computed tomography. (U.K.)