Abstract #1190

DW-EPI distortion reduction using Multi-shot EPI (MUSE) and Reverse Polarity Gradient (RPG) in Head & Neck Region

Maggie M Fung¹, Amaresha Konar Shridhar², Arnaud Guidon³, Amita Shukla-Dave^2,4, and Vaios Hatzoglou⁴

¹MR Apps & Workflow, GE Healthcare, New York City, NY, United States, ²Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York City, NY, United States, ³MR Apps & Workflow, GE Healthcare, Boston, MA, United States, ⁴Department of Radiology, Memorial Sloan Kettering Cancer Center, New York City, NY, United States

The purpose of this study is to investigate the distortion correction performance and ADC value consistency of the single shot EPI (SSEPI), multi-shot EPI (MUSE) and reverse polarity gradient (RPG) method in phantom, and head & neck cancer patients. We observed improved distortion correction performance in MUSE, and best distortion correction in MUSE plus RPG method. Improved anatomical details, reduced artifacts and improved perceived clinical utility were also observed in MUSE (with and without RPG) as compare to SSEPI. ADC values remained consistent between these techniques.

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