Abstract #3413

Dual-echo blip reversed EPI acquisition enables distortion correction in the presence of motion in diffusion-weighted MRI

Onur Afacan¹, W. Scott Hoge², Tess E. Wallace¹, Ali Gholipour¹, Sila Kurugol¹, and Simon K. Warfield¹

¹Boston Children's Hospital and Harvard Medical School, Boston, MA, United States, ²Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States

Slice-to-volume registration methods have been shown to provide motion robust reconstruction for large and frequent motions. One challenge with motion correction is the changing magnetic field inhomogeneities with different head positions. In this work we implemented a dual-echo blip reversed EPI acquisition and show that this sequence can be used to reduce distortions in large and frequent motions and can improve slice-to-volume registration results.

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