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Abstract #2551

Contribution of FOV Updating and Reacquisition to Estimates of Cortical Surface Measures in PROMO MPRAGE

Joelle E Sarlls 1 , Francois Lalonde 2 , Dan Rettmann 3 , Ajit Shankaranarayanan 4 , Vinai Roopchansingh 5 , and S. Lalith Talagala 1

1 NMRF/NINDS, National Institues of Health, Bethesda, MD, United States, 2 NIMH, National Institutes of Health, Bethesda, MD, United States, 3 GE Healthcare, Rochester, NY, United States, 4 GE Healthcare, Menlo Park, CA, United States, 5 FMIRF/NIMH, National Institutes of Health, Bethesda, MD, United States

Prospective motion correction techniques, such as PROMO, are increasingly available to improve the quality of high resolution anatomical MRI. PROMO consists of two parts, FOV updating and reacquisition of k-space data when excessive motion is detected. Reacquisition of data adds extra scan time, which is undesirable for pediatric or patient studies where scan time is limited. The contribution of each part of PROMO in reducing errors of cortical surface reconstruction measures was investigated. This study shows that utilizing either part of PROMO improves accuracy of measures, but full PROMO provides the greatest accuracy.

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