报道了肝受体显象剂￣（９９ｍ）Ｔｃ－ＤＴＰＡ－ＮＧＡ的制备方法及其特性研究。该显象剂放化纯度＞９５％，在体外和人体血液中的稳定性均大于６小时，有良好的趋肝性和受体介导结合特性。￣（９９ｍ）Ｔｃ－ＤＴＰＡ－ＮＧＡ和￣（９９ｍ）Ｔｃ－ＮＧＡ对比研究表明，前者在体外和人血液中的稳定性均比后者好；家免显象结果前者质量明显高于后者；尿中放射性代谢产物检测，前者在体内无脱落￣（９９ｍ）Ｔｃ的现象，而后者较明显。临床１０例肝受体显象结果满意。 The preparation and characterization of liver receptor imaging agent 99m Tc-DTPA-NGA were reported. The radiochemical purity of the imaging agent> 95%, stability in vitro and in human blood are greater than 6 hours, has a good hepatic and receptor-mediated binding properties. Compared with 99m Tc-DTPA-NGA and 99m Tc-NGA, the stability of the former in both in vitro and in human blood was better than that of the latter; the former was significantly higher than the latter in the former; Urinary radioactive metabolites, the former no shedding in the body ~ (99m) Tc phenomenon, while the latter is more obvious. Clinical 10 cases of liver receptor imaging results were satisfactory.