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Abstract #4089

Combined prospective motion correction and retrospective B0 correction for EPI using optical tracking and predictive B0 maps.

James Smith1, Olivier Mougin1, Kingkarn Aphiwatthanasumet1, Matthew Clemence2, Andrew Peters1, Richard Bowtell1, Paul Glover1, and Penny Gowland1

1Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, United Kingdom, 2Philips Healthcare, Nottingham, United Kingdom

We demonstrate a combination of prospective motion correction and retrospective B0 unwarping using predictive field maps to improve the registration of EPI images. Prospective motion correction is performed using an optical tracking camera and custom scanner code. Field maps were generated using a multilinear fit of subject orientation using data gathered at known orientations. Results show a higher correlation when registering EPI data to a high-resolution anatomical, post-correction.

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