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Yeungnam Univ J Med > Volume 11(1); 1994 > Article
Yeungnam University Journal of Medicine 1994;11(1):101-108.
DOI: https://doi.org/10.12701/yujm.1994.11.1.101    Published online June 30, 1994.
Estimation of Glomerular Filtration Rate(GFR) Using (99m)Tc-DTPA Renal Scan and the Parameters for Renal Function.
Ihn Ho Cho, Hyun Dae Yoon, Kyu Chang Won, Chan Woo Lee, Hyoung Woo Lee, Hyun Woo Lee
Abstract
Many previously described nuclear medicine procedures to assess glomerular filtration rate have some problems because numerous blood sample is to be taken and they don't measure each separate renal function. Gates described isotopic method for the measurement of global and unilateral GFR based on the fractional renal uptake of (99m)Tc-DTPA 2 to 3 minutes after its intravenous injection. We evaluated GFR using (99m)Tc-DTPA in 57 people according to Gates method and compared with creatinine clearance. A good correlation was observed between creatinine clearance and GRF calculated by Gates' formula with an r value of 0.9(P<0.05). And also the relationship between parameters of (99m)Tc-DTPA renal scan images and GFR was taken. They were significantly correlated with GFR calculated by Gates' formula : r value 0.66 between relative intensity of peak renal to peak aortic activity(pK/pA) and GFR, -0.42 between time between aortic and kidney peak(A-K) and GFR and -0.48 between parenchymal renal activity at 25 min compared to peak kidney activity(25K/pK) and GRF. In conclusion, the determination of GFR according to Gates' formula shows good and reproducible of GRF with rapidity and simplicity. And the parameters from the renal scan images can use to estimate the renal function.


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