Abstract #2560
Prospective motion correction of DW 3D-MS EPI using collapsed FatNav (cFatNav)
Mathias Engstrm 1,2 , Enrico Avventi 1,2 , Magnus Mrtensson 2,3 , Ola Norbeck 1 , and Stefan Skare 1,2
1
Dept. of Neuroradiology, Karolinska
University Hospital, Stockholm, Stockholm, Sweden,
2
Dept.
of Clinical Neuroscience, Karolinska Institutet,
Stockholm, Stockholm, Sweden,
3
EMEA
Research and Collaboration, GE Applied Science
Laboratory, GE Healthcare, Stockholm, Sweden
Here we suggest combining collapsed fat navigation
(cFatNav) with diffusion-weighted 3D multi-slab
echo-planar imaging (DW 3D-MS EPI) for prospective
motion correction. 3D rigid body motion was registered
via three orthogonal EPI readouts, which depicted
projections of the subcutaneous fat. With a readout
block duration of 6.4 ms (R = 8) motion updates were
received at a ~5-10 Hz update rate, at a 5% scan time
increase.
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