Cationic cyanato and thiocyanato complexes useful as radiodiagnostic agents

摘要

An hepatobiliary imaging agent is disclosed which is a cationic complex of Tc-99m, a cyanate or thiocyanate ion, and a mono or polydentate organic ligand having one or more donor atoms, each with a free-electron pair available for accepting a proton or for complexing with Tc-99m to form a cationic complex. These complexes can provide images of the hepatobiliary transit in as little as ten minutes.