摘要:
A chemical compound has the general formula: Ex4-linker-Sar( 64 Cu)-Fl in which Ex4 is an extendin-4 analog; linker is a polyethylene glycol (PEG) chain, for example formed with four ethylene glycol residues; Fl is a photoluminescent moiety, and Sar( 64 Cu) is an atom of copper-64 chelated in a sarcophagine moiety is useful as a multimodality imaging agent for detection and localization of insulinoma cells and β-cell masses.