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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