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@ARTICLE{Mattern:140591,
author = {Mattern, Hendrik and Sciarra, Alessandro and Lüsebrink,
Falk and Acosta-Cabronero, Julio and Speck, Oliver},
title = {{P}rospective motion correction improves high-resolution
quantitative susceptibility mapping at 7{T}.},
journal = {Magnetic resonance in medicine},
volume = {81},
number = {3},
issn = {0740-3194},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {DZNE-2020-06913},
pages = {1605-1619},
year = {2019},
abstract = {Recent literature has shown the potential of
high-resolution quantitative susceptibility mapping (QSM)
with ultra-high field MRI for imaging the anatomy, the
vasculature, and investigating their magnetostatic
properties. Higher spatial resolutions, however, translate
to longer scans resulting, therefore, in higher
vulnerability to, and likelihood of, subject movement. We
propose a gradient-recalled echo sequence with prospective
motion correction (PMC) to address such limitation.Data from
4 subjects were acquired at 7T. The effect of small and
large motion on QSM with and without PMC was assessed
qualitatively and quantitatively. Full brain QSM and
QSM-based venograms with up to 0.33 mm isotropic voxel size
were reconstructed.With PMC, motion artifacts in QSM and
QSM-based venograms were largely eliminated, enabling-in
both large- and small-amplitude motion regimes-accurate
depiction of the cortex, vasculature, and other small
anatomical structures that are often blurred as a result of
head movement or indiscernible at lower image resolutions.
Quantitative analyses demonstrated that uncorrected motion
could bias regional susceptibility distributions, a trend
that was greatly reduced with PMC.Qualitatively, PMC
prevented image degradation because of motion artifacts,
providing highly detailed QSM images and venograms.
Quantitatively, PMC increased the reproducibility of
susceptibility measures.},
keywords = {Adult / Algorithms / Artifacts / Brain: diagnostic imaging
/ Brain Mapping: methods / Female / Head Movements / Humans
/ Image Interpretation, Computer-Assisted: methods / Image
Processing, Computer-Assisted: methods / Magnetic Resonance
Imaging / Magnetics / Male / Motion / Reproducibility of
Results / Vision, Ocular},
cin = {AG Nestor / AG Düzel},
ddc = {610},
cid = {I:(DE-2719)1310001 / I:(DE-2719)5000006},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30298692},
doi = {10.1002/mrm.27509},
url = {https://pub.dzne.de/record/140591},
}