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Abstract #3099

Phase Correction in Bipolar Multi-Echo Water-Fat Separation for Off-Isocenter Imaging

Hojin Kim1,2, Kyung Sung1, Misung Han1,2, Marcus Alley1, Wenmiao Lu3, Brian Andrew Hargreaves1

1Department of Radiology, Stanford University, Stanford, CA, United States; 2Department of Electrical Engineering, Stanford University, Stanford, CA, United States; 3School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore

Bipolar multi-echo sequence benefits from reducing scan time as well as motion artifacts at the cost of several sources of phase discrepancy due to the polarity reversal in the readout gradient. To address phase correction in bipolar sequences, this work proposes the use of simple reference scan with baseline projections, which corrects linear and constant phase errors. Significantly, this proposed method is applied for off-isocenter imaging, so that accurate water-fat separation in bipolar sequence is capable at any scan location.