Garima Agrawal1, Sean B. Fain1,2, Nathan Artz2, Andrew L. Wentland2, Thomas M. Grist1,2, Arjang Djamali3, Elizabeth A. Sadowski1
1Radiology, University of Wisconsin, Madison, Madison, WI, USA; 2Medical Physics, University of Wisconsin, Madison, Madison, WI, USA; 3Nephrology, University of Wisconsin, Madison, Madison, WI, USA
We evaluated the reproducibility and feasibility of MR blood-oxygen level dependent (BOLD) measurements in kidneys on 1.5T as well as 3.0T in native and transplanted kidneys. Coefficient of variation (CV) for cortical and medullary R2* values were obtained from both 1.5T and 3.0T within and between subjects. BOLD MR imaging at 3.0T had a comparable reproducibility to 1.5T for normal native kidneys. In transplanted kidneys, BOLD processing at 3T could not be performed in a significant number of subjects due to a significant amount of susceptibility and motion artifacts.