Extracting Quantitative Parameters From a Mathematical Model Fitted to Renal Artery Blood Flow Data obtained by Magnetic Resonance Angiography
Smedby , Larsson M, Persson A, Eriksson P
To investigate the feasibility of quantitative parameter extraction, 8 patients and 5 controls were examined with cine phase-contrast MR velocity measurements and blood flow data were extracted. A mathematical model with parameters describing the temporal course of the curve was fitted to the aorta and renal artery blood flow data. Acceptable curve fitting (R2>0.80) was obtained in 36 of 39 curves. The results suggest that it is technically feasible to fit a mathematical model to renal blood flow data and from it extract quantitative parameters potentially useful for diagnosis of renal artery stenosis.