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Abstract #1167

Two-Dimensional Coil-signature-based Phase Cycled Reconstruction for Inherent Correction of Echo-Planar Imaging Nyquist Ghost Artifacts

Silu Han1, Chidi Patrick Ugonna1, Mahesh Bharath Keerthivasan2,3, and Nan-kuei Chen1,3
1Biomedical Engineering Department, The University of Arizona, Tucson, AZ, United States, 2Siemens Medical Solutions USA, New York, NY, United States, 3Medical Imaging Department, The University of Arizona, Tucson, AZ, United States

A novel two-dimensional (2D) coil-signature-based phase cycled correction method has been developed for Nyquist artifact removal in echo planar imaging (EPI). Our method uses already available coil sensitivity information, without requiring extra reference scans, to correct 2D phase errors and can be applied equally well to single-shot and multi-shot EPI. Our results show that the developed method can effectively reduce Nyquist artifacts in EPI data acquired using a variety of acceleration schemes, such as through-plane Multi-band Imaging (MB) and in-plane parallel SENSitivity Encoding Imaging (SENSE).

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