Valentina Taviani1, Jean H. Brittain2, Bruce D. Collick3, Diego Hernando1, Nathan S. Artz1, Scott B. Reeder1, 4
1Department of Radiology, University of Wisconsin, Madison, WI, United States; 2Applied Science Laboratory, GE Healthcare, Madison, WI, United States; 3GE Healthcare, Waukesha, WI, United States; 4Department of Medical Physics, University of Wisconsin, Madison, WI, United States
Diffusion-prepared (DP) fast spin-echo (FSE) techniques could potentially produce distortion-free, diffusion-weighted images with high SNR and high resolution. However, the large diffusion-sensitizing gradients applied during the preparation can produce eddy-current-induced phase shifts at the time of magnetization tip-up, resulting in an unwanted modulation of the transverse magnetization. In this work we demonstrate the improved eddy current properties of a twice-refocused diffusion preparation scheme when compared to previously reported once-refocused preparations and we show preliminary phantom data obtained with a DP single-shot FSE technique and the twice-refocused diffusion-encoding scheme.
Keywords