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Abstract #1632

3D EPI Phase Maps for Real Time EPI Distortion Correction

A. Alhamud 1 , Paul A. Taylor 1 , Andr J.W. van der Kouwe 2 , and Ernesta M. Meintjes 1

1 Human Biology,MRC/UCT Medical Imaging Research Unit, University of Cape Town, Cape Town, Western Cape, South Africa, 2 Massachusetts General Hospital, Charlestown, Massachusetts, United States

Single- or multi-shot Echo Planar Imaging (EPI) is the first choice for several imaging modalities such as diffusion tensor imaging (DTI) and functional MRI (fMR) etc, due to its ability to acquire images very rapidly. EPI is affected by several artifacts such as distortion from magnetic field inhomogeneity. Although several techniques have been reported for correcting the B0 homogeneity, these methods have some limitations and drawbacks. In this work we introduce a sophisticated method using the 3D EPI phase maps to correct TR-by-TR in real time the distortion in B0 for any imaging modality that implement EPI.

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