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Abstract #0768

A Reliable, Efficient and Flexible Multi-Echo FSE Based Water-Fat Separation Method

Huanzhou Yu1, Ann Shimakawa1, Sabina Prato2, Scott B. Reeder3, Charles A. McKenzie4, Jean H. Brittain5

1Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States; 2GE Healthcare, Waukesha, WI, United States; 3Departments of Radiology, Medical Physics, Biomedical Engineering and Medicine, University of Wisconsin, Madison, Madison, WI, United States; 4Department of Medical Biophysics, University of Western Ontario, London, ON, Canada; 5Applied Science Laboratory, GE Healthcare, Madison, WI, United States

Three-point IDEAL water-fat separation techniques have been applied to FSE sequences, however, minimum scan time is tripled. Therefore, it is desirable to collect all 3 echoes in one repetition, an approach that brings unique challenges. In this work, we present a multi-echo FSE-IDEAL implementation that offers superior noise performance, high quality water-fat separation and flexible echo shift choices. The bipolar acquisition with high order phase correction allows efficient acquisition and uniform water-fat separation. Echo shifts are adapted to the desired resolution with best tradeoff in SNR. The technique is demonstrated in volunteer scanning in a variety of anatomic regions.