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Abstract #2485

Phase Combination for Multi-Channel RF Coils with a Dual-Echo Scan in Water-Fat Imaging

Zhongxu An1, 2, Rui Li1, Haining Liu1, Chun Yuan1, 3, Hua Guo1

1Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Beijing, China; 2Department of Electronic Engineering, Beihang University, Beijing, China; 3Department of Radiology, University of Washington, Seattle, WA, United States

Owing to the phase offset existing among different channels, phase images from multi-channel coils are difficult to combine. In this work, a new Multi-Channel Phase Combination with In-Out phase time (MCPC-IO) is proposed and verified by phantom studies. It is also applied in six-point IDEAL water-fat separation. The mean value of fat fraction calculated with MCPC-IO is closer to the true value than with the conventional method. Phase unwrapping is not needed in MCPC-IO, and it can also be simply applied to phase combination in susceptibility weighted imaging.