^99mTc—DTPA肾动态显像评价重度肾积水患肾残余功能的临床价值

目的探讨核素^99mTc—DTPA肾动态显像评价重度肾积水患肾残余功能的临床价值。方法B超检查诊断为重度肾积水的患者29例（共30只患肾），应用核素^99mTc—DTPA行肾动态显像，同期行静脉肾盂造影（IVP），比较这两种方法评价患肾残余功能的差异。结果（1）在30只受检患肾中，有12只患肾IVP和^99mTc—DTPA肾动态显像均显示有残余功能，GFR为（22．32±3．55）ml／min；IVP不显影的患肾18只，其中8只^99mTc—DTPA肾动态显像提示患肾有残余功能，GFR为（13．36±4．54）ml／min，剩余10只患肾^99mTc—DTPA肾动态显像亦显示无残余功能。（2）^99mTc—DTPA肾动态显像结果显示有残余功能肾脏多于IVP（P〈0．05）。结论^99mTc—DTPA肾动态显像用于评价重度肾积水患肾残余功能较IVP更为灵敏，且能定量分析肾小球滤过功能。

The clinical value of 99m Tc - DTPA Renal dynamic imaging in evaluating residual function of the kidney with severe hydronephrosis

Objective To evaluate the clinical value of the radionuclide 99mTc - DTPA renal dynamic imaging for measuring residual function of the kidney with severe hydronephrosis. Methods 29 patients( a total of 30 hydrops kidneys)who had severe hydronephrosis diag-nosed by B ultrasonography were compared with results obtained by 99mTc-DTPA renal dynamic imaging and intravenous pyelography respec-tively. Results (1) Among 29 patients with 30 hydrops kidney, 12 hydrops kidneys had shown residual function with the IVP and 99mTc-DTPA renal dynamic imaging, GFR was (22.32±3.55 )ml/min; IVP showed negtive in 18 hydrops kidney, but 99mTc -DTPA renal dynam-ic imaging showed positive in 8 cases, GFR was (13.36±4.54) ml/min,the otherl0 hydrops kidneys were showed no residual function by 99mTc-DTPA renal dynamic imaging as well; (2)99mTc-DTPA renal dynamic imaging had significant difference compare with IVP in resid-ual function test (P<0.05). Conclusion 99mTc-DTPA renal dynamic imaging is more sensitive than IVP in evaluating residual function of the kidney with severe hydronephrosis, and it also can measure GFR.