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Abstract #3225

Water/Fat Separation of Short T2* Tissue Using Multi-Echo Ultra-Short Echo Time (UTE) Imaging and IDEAL

Kang Wang1, Huanzhou Yu2, Jean Brittain3, Scott Reeder, 1,4, Jiang Du5

1Medical Physics, University of Wisconsin-Madison, Madison, WI, United States; 2Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States; 3Applied Science Laboratory, GE Healthcare, Madison, WI, United States; 4Radiology, University of Wisconsin-Madison, Madison, WI, United States; 5Radiology, University of California, San Diego, San Diego, CA, United States

An ultrashort TE (UTE) imaging technique has been developed for the visualization of tissues with short T2 or T2*, such as menisci and tendons. UTE methods typically utilize fat suppression to improve the contrast for tissues with short T2. However, conventional fat-saturation methods achieve limited success due to the broad short T2* water-peak and the complexity of the fat spectrum. In this work, we have combined a 2D multi-slice multi-echo UTE sequence with a water/fat separation technique (IDEAL), to obtain high contrast short T2 images without the use of any preparation pulse and within acceptable scan times.