Quantitative renal scintigraphic determination of effective renal plasma flow in dogs with normal and abnormal renal function, using 99mTc-mercaptoacetyltriglycine.
Effective renal plasma flow (ERPF) was evaluated, using the measurement of p-aminohippurate clearance (CLPAH) and quantitative renal scintigraphy (QRS) with 99mTc-mercaptoacetyltriglycine (99mTc-MAG3). The CLPAH and QRS determinations were made in 6 dogs: 2 determinations for each dog before, and 1 determination after induction of renal failure by administration of amphotericin B. Least-squares regression analysis was used to derive an equation to estimate ERPF from QRS data. The results indicated that QRS, using 99mTc-MAG3, correlated reasonably well (r = 0.82, P < 0.001) with ERPF determined from the CLPAH value. The right kidney contributed 53.3% of global ERPF (P = 0.002). Hepatobiliary excretion of 99mTc-MAG3 was variable within each dog. There was not a consistent pattern with respect to time or renal function. All dogs had nausea or emesis, or both, after IV administration of 99mTc-MAG3. The QRS method with 99mTc-MAG3 provides an adequate means to estimate ERPF in healthy dogs and dogs with renal failure.
Itkin
R J
RJ
Department of Veterinary Biosciences, College of Veterinary Medicine, University of Illinois, Urbana 61801.
Krawiec
D R
DR
Twardock
A R
AR
Gelberg
H B
HB
D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology*; D004285:Dogs / Q000502:physiology*; D005260:Female; D008297:Male; D011877:Radionuclide Imaging; D012016:Reference Values; D051437:Renal Insufficiency / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000662:veterinary*; D017596:Renal Plasma Flow, Effective / Q000502:physiology*; D017263:Technetium Tc 99m Mertiatide; D010130:p-Aminohippuric Acid
D017263:Technetium Tc 99m Mertiatide; D010130:p-Aminohippuric Acid