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