Abstract #1642

2D Single-Shot Radial Diffusion-Weighted Imaging free of geometric distortion and optimization of SNR using Variable Flip-Angle and Random View-Ordering

Kyle Jeong^1,2 and Eun-Kee Jeong^1,3

¹Utah Center for Advanced Imaging and Research, University of Utah, Salt Lake City, UT, United States, ²Department of Bioengineering, University of Utah, Salt Lake City, UT, United States, ³Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT, United States

The 2D ss-DWEPI is routinely used for in-vivo DW imaging, because of its immunity to motion-induced artifact, but prone to susceptibility-induced geometric distortion. We present a novel DWI technique using single-shot radial imaging, which produces DW images with minimal geometric distortion, no motion artifact, and with optimized SNR and reduced effect of undersampling radial streak artifact. Variable-flip angle (VFA) and random-view ordering (RVO) were implemented to improve the SNR and reduce the geometric distortion, respectively.

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