Benedikt A. Poser1,2, 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.