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Abstract #3781

Reference-free Distortion Correction for EPI by Flipped k-space Segments (DICOFLIP)

Marco Reisert 1 and Michael Herbst 1,2

1 Medical Physics, University Medical Center Freiburg, Freiburg, Germany, 2 Department of Radiology, John A. Burns School of Medicine, Honolulu, Hawai, United States

Off-resonance effects cause distortion artefacts in single shot EPI data, even when parallel imaging is incorporated. Multi-shot acquisition methods can partially solve these issues, but are susceptible to phase differences between different shots, in particular in DWI. In this work we combine multiplexed sensitivity encoding (MUSE) with an interleaved bottom-up/top-down traversal of k-space of the individual k-space segments to completely remove susceptibility induced distortions without any reference scan.

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