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Abstract #4382

Phase Correction for Abdominal Quantitative Susceptibility Mapping with Bipolar Readout Gradients Sequence

Rui Tong1, Jianqi Li1, Xu Yan2, and Yi Wang3

1Shanghai Key Laboratory of Magnetic Resonance, Shanghai, China, 2MR Collaboration NE Asia, Siemens Healthcare, Shanghai, China, Shanghai, China, 3Department of Radiology, Weill Medical College of Cornell University, New York, New York, USA, New York, NY, United States

Bipolar acquisition in abdominal multi-echo quantitative susceptibility mapping (QSM) could reduce echo-spacing and total scan time. However, the bipolar acquisition introduces phase error between odd and even echoes. A phase correction method in image domain was proposed to address this problem. We demonstrated the feasibility of generating a quantitative susceptibility map in human abdomen using bipolar multi-echo GRE sequence. Quantification analysis showed an excellent agreement between bipolar and unipolar methods.

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