Abstract #5056

Optimized Acquisition Strategy for Reference-Free Reduction of Nyquist Ghosting in EPI at 7 T

Benedikt A. Poser^1,2, Pl Erik Goa,^1,3, Markus Barth,^1,2

¹Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany; ²Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands; ³Department of Medical Imaging, St. Olavs University Hospital, Trondheim, Norway

Nyquist (N/2) ghosting in EPI tends to become particularly problematic at ultra-high field. Strongly dependent on imaging parameters especially echo spacing and readout bandwidth ghosting may pose considerable practical limitations when setting up fMRI protocols at 7 T and above.