Patent ID: 7445765

Claim:
A radiopharmaceutical for diagnostic imaging, comprising an ion of technetium-99m nitride heterocomplex, represented by following formula (1): [ 99m Tc(N)(PNP)(XY)] + (1) wherein 99m Tc is a metastable nuclear isomer of technetium-99m; N is a nitrogen atom bonded to 99m Tc; PNP is a bisphosphinoamine ligand coordinated with 99m Tc and XY is a bidentate ligand coordinated with 99m Tc, wherein the bisphosphinoamine ligand is bis(di(methoxypropyl)phosphinoethyl)ethoxyethylamine and the bidentate ligand is selected from the group consisting of N-ethoxyethyl-N-isopropyl dithiocarbamate, N-ethoxyethyl-N-ethyl dithiocarbamate, and -N-diethoxyethyl dithiocarbamate.