Abstract #1638
Improved ghost-correction in multi-shot EPI using PLACE and GESTE
W Scott Hoge 1,2 , Huan Tan 3 , Robert A Kraft 4 , and Jonathan R Polimeni 2,5
1
Brigham and Women's Hospital, Boston,
Massachusetts, United States,
2
Harvard
Medical School, Boston, MA, United States,
3
Department
of Surgery (Neurosurgery), University of Chicago,
Chicago, Illinois, United States,
4
Virginia-Tech
Wake Forest School of Biomedical Engineering,
Winston-Salem, NC, United States,
5
A.A.
Martinos Center for Biomedical Imaging, MGH,
Charlestown, MA, United States
This works seeks to further improve the correction of
Nyquist ghosting in multi-shot (or segmented) echo
planar imaging. EPI is vulnerable to static local field
inhomogeneity and eddy current effects induced by the
EPI readout, which results in Nyquist ghosting.
Multi-shot EPI is further complicated by phase
inconsistencies that often occur between the acquisition
of each segment. PLACE and GESTE have been shown
previously to provide superior ghost correction in
single-shot EPI images. We demonstrate their further
effectiveness in segmented EPI with in-vivo brain data
acquired at 7T using a 32-channel head coil.
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