观察分析40例~(99m)Tc—EC和60例~(99m)Tc—DTPA肾功能正常者的两种肾动态图像,其各自显像特点:①~(99m)Tc—EC者无血流灌注峰,而~(99m)Tc—DTPA者有明显血流灌注峰;②~(99m)Tc—EC肾动态图像清晰、对比度好即本底低,而~(99m)Tc—DTPA本底较高;③两种肾功能曲线形态虽相似,但~(99m)Tc—EC浓集段的上升及排泄段的下降斜率较大,而~(99m)Tc—DTPA斜率均小于前者;④~(99m)Tc—EC肾脏指数明显高于~(99m)Tc—DTPA,而~(99m)Tc—DTPA的20min残留率高于~(99m)Tc—EC,但两者的峰时无差异。 Two renal dynamic images of 40 ~ (99m) Tc-EC and 60 ~ (99m) Tc-DTPA with normal renal function were observed and analyzed. Their imaging features were as follows: ① 99m Tc-EC without blood flow (99m) Tc-DTPA had a significant peak of perfusion; ② 99m Tc-EC renal dynamic image was clear and the contrast was good, that is, the background was low, while the background of ~ (99m) Tc- (99m) Tc-EC concentration section of the rising and excretion section of the slope of decline, and ~ (99m) Tc-DTPA slope were less than the former; ④ ~ ( The 99m Tc-EC renal index was significantly higher than 99m Tc-DTPA, while 99m Tc-DTPA was higher than 99m Tc-EC at 20min.