The present invention provides radiolabeled compounds of formulae (VII) and (VIII) comprising a urea derivative, a linker, a metal chelating group, and a radiolabeled or isotopically labelled metal, pharmaceutical compositions comprising such radiolabeled compounds and methods of detecting PSMA expressing tumors. The compounds of the invention are useful for providing diagnosis of cancer.
                            本发明提供了式(VII)和(VIII)的放射性标记化合物,包括
脲衍
生物、连接体、
金属螯合基团和放射性标记或同位素标记的
金属;提供了包含这种放射性标记化合物的药物组合物和检测表达 PSMA 的肿瘤的方法。本发明的化合物可用于癌症诊断。