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Abstract #1796

Improving EPI Phase Correction for Breast DWI

Jessica A McKay1, Steen Moeller2, Sudhir Ramanna2, Edward J Auerbach2, Michael T Nelson2, Kamil Ugurbil2, Essa Yacoub2, and Patrick J Bolan2

1Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, United States, 2Department of Radiology, University of Minnesota, Minneapolis, MN, United States

It is important to improve ghost correction in breast DWI using SE-EPI because residual ghosts bias ADC measurements, which reflect malignancy. The standard ghost correction method using a 3-line navigator frequently fails in breast DWI. In this work we implemented several alternative ghost correction strategies. The two best methods outperformed the standard 3-line navigator correction. These techniques applied 1D, linear corrections based on 1) phase maps from separate reference scans and 2) entropy minimization.

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