Improved Abdominal Diffusion Weighted Imaging at 3T using Optimized Shinnar-Le Roux Adiabatic Radiofrequency Pulses
Hadrien Dyvorne 1 and Priti Balchandani 1
Radiology, Icahn School of Medicine at Mount
Sinai, New York, NY, United States
At 3T, radiofrequency B1 field inhomogeneity affects
data quality and signal to noise ratio of abdominal
diffusion weighted imaging (DWI). The purpose of this
work is to develop new approaches for 3T abdominal DWI,
that rely on the use of adiabatic pulses in a single- or
twice-refocused acquisition. We show that adiabatic RF
pulses lead to increased signal in regions suffering
from B1 inhomogeneity, which in turn results in improved
quality for apparent diffusion coefficient maps measured
in a healthy volunteer at 3T.
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