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Abstract #2800

k-Space Water-Fat Decomposition with Chemical Shift Correction and T2* Decay Compensation for Ultrashort TE Imaging

Kang Wang1, Jiang Du2, Huanzhou Yu3, Jean H. Brittain4, Scott B. Reeder1,5

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

Tissues with very short T2*, such as bone and tendon, can be imaged with ultrashort TE (UTE) techniques. However, like all radial methods, UTE methods can be degraded by chemical shift artifacts and T2* decay. Here we proposed a k-space decomposition method that incorporates chemical shift correction and accounts for the T2* decay between echo images. More importantly, it also compensates for the blurring artifacts caused by the intrinsic T2* decay during readout, which can be pronounced for tissue with very short T2*.