Nicolas Geades1, Oscar Jalnefjord2,3, Guillaume Gilbert4, and Maria Ljungberg2,3
1MR Clinical Science, Philips, Gothenburg, Sweden, 2Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden, 3Department of Radiation Physics, University of Gothenburg, Gothenburg, Sweden, 4MR Clinical Science, Philips, Markham, ON, Canada
1MR Clinical Science, Philips, Gothenburg, Sweden, 2Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden, 3Department of Radiation Physics, University of Gothenburg, Gothenburg, Sweden, 4MR Clinical Science, Philips, Markham, ON, Canada
By
replacing scan time used for acquiring images purely used for averaging (when applicable),
with EPI acquisitions at opposing readout directions, ghost artifacts can be eliminated.
The implementation provides ghost-free images with a minimal (7%) increase in scan time.
MD-dMRI maps with and without EBS. Mean Diffusivity (MD),
Mean Isotropic Kurtosis (MKI), Mean Anisotropic Kurtosis (MKA)
Artifact
vs. b-value. Images are shown with EBS on (top row) and visible ghosting
artifacts, EBS off (middle row) with no visible artifacts, as well as a
difference image (bottom row)