• David L Buckley, Ala'a E Shurrab, Ching M Cheung, Andrew P Jones, Hari Mamtora, and Philip A Kalra.
• Imaging Science and Biomedical Engineering, University of Manchester, Manchester, and Department of Renal Medicine, Hope Hospital, Salford, United Kingdom. david.buckley@manchester.ac.uk
• J Magn Reson Imaging. 2006 Nov 1; 24 (5): 1117-23.

PurposeTo compare two methods for assessing the single kidney glomerular filtration rate (SK-GFR) in humans using dynamic contrast-enhanced (DCE)-MRI.Materials And MethodsImages were acquired from 39 separate MR studies of patients with atherosclerotic renovascular disease (ARVD). Data from the kidneys and descending aorta were analyzed using both a Rutland-Patlak plot and a compartmental model. MR estimates of the SK-GFR were compared with standard radioisotope measures in a total of 75 kidneys.ResultsEstimates of renal function using both techniques correlated well with radioisotope-assessed SK-GFR (Spearman's rho=0.81, Rutland-Patlak; rho=0.71, compartmental model). The Rutland-Patlak approach provided a near one-to-one correspondence, while the compartmental method tended to overestimate SK-GFR. However, the compartmental model fits to the experimental data were significantly better than those obtained using the Rutland-Patlak approach.ConclusionDCE-MRI of the kidneys provides data that correlate well with reference measures of SK-GFR. However, further work, including image registration, is needed to isolate measurement of glomerular filtration to the level of the renal cortex.Copyright (c) 2006 Wiley-Liss, Inc.

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