IMPROVED RADIOMETAL COMPLEX COMPOSITIONS

摘要

The present invention relates to stabilised technetium and rhenium metal complex compositions comprising a radioprotectant and a radiometal complex of a tropane-tetradentate chelating agent conjugate, wherein the radiometal complex is neutral. Radiopharmaceuticals comprising the stabilised metal complex compositions, and kits for the preparation of the radiopharmaceuticals are also described.