Abstract #0745

Quantitative Single Breath-Hold Renal ASL Perfusion Imaging at 7T

Xiufeng Li¹, Pierre-Francois Van de Moortele¹, Kamil Ugurbil¹, and Gregory J. Metzger¹

¹Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

In contrast to studies at 3T, where the whole body coil is used for RF transmission, studies at 7T use local transcieve coils, which have limited B₁+ coverage producing smaller temporal bolus widths that need to be estimated in order to achieve proper renal blood flow (RBF) quantification. To estimate the temporal bolus width and to quantify RBF at 7T, single breath-hold renal perfusion studies were performed using the FAIR ss-FSE method with varied delay times. Based on the results form multi-delay perfusion study, quantitative renal perfusion imaging was further achieved by using a single-subtraction approach.

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