RADIOPHARMACEUTICAL FOR DIAGNOSTIC IMAGING CONTAINING A TECHNETIUM-99M NITRIDE HETEROCOMPLEX

摘要

A radiopharmaceutical for diagnostic imaging containing as an active ingredient a technetium-99m nitride heterocomplex comprising technetium-99m nitride and two different ligands coordinated therewith, i.e., a bisphosphinoamine compound as a .pi. electron acceptor and a bidentate ligan d as a .pi. electron donor and represented by the following formula (1): [99mTc(N)(PNP)(XY)]+ (1)wherein 99mTc(N) is technetium-99m nitride, PNP is a bisphosphinoamine compound and XY is a bidentate ligand, is markedly accumulated in heart and adrenal glands and hence is useful for radiodiagnostic imaging of heart and adrenal glands.