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@ARTICLE{Lindemeyer:892715,
author = {Lindemeyer, Johannes and Worthoff, Wieland A. and
Shymanskaya, Aliaksandra and Shah, N. Jon},
title = {{I}terative {R}estoration of the {F}ringe {P}hase
({REFRASE}) for {QSM}},
journal = {Frontiers in neuroscience},
volume = {15},
issn = {1662-453X},
address = {Lausanne},
publisher = {Frontiers Research Foundation},
reportid = {FZJ-2021-02285},
pages = {537666},
year = {2021},
abstract = {In quantitative susceptibility mapping (QSM), reconstructed
results can be critically biased by misinterpreted or
missing phase data near the edges of the brain support
originating from the non-local relationship between field
and susceptibility. These data either have to be excluded or
corrected before further processing can take place. To
address this, our iterative restoration of the fringe phase
(REFRASE) approach simultaneously enhances the accuracy of
multi-echo phase data QSM maps and the extent of the area
available for evaluation. Data loss caused by strong local
phase gradients near the surface of the brain support is
recovered within the original phase data using harmonic and
dipole-based fields extrapolated from a robust support
region toward an extended brain mask. Over several
iterations, phase data are rectified prior to the
application of further QSM processing steps. The concept is
successfully validated on numerical phantoms and brain scans
from a cohort of volunteers. The increased extent of the
mask and improved numerical stability within the segmented
globus pallidus confirm the efficacy of the presented method
in comparison to traditional evaluation.},
cin = {INM-4 / INM-11 / JARA-BRAIN},
ddc = {610},
cid = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)INM-11-20170113 /
I:(DE-Juel1)VDB1046},
pnm = {525 - Decoding Brain Organization and Dysfunction
(POF4-525)},
pid = {G:(DE-HGF)POF4-525},
typ = {PUB:(DE-HGF)16},
pubmed = {34054401},
UT = {WOS:000654971500001},
doi = {10.3389/fnins.2021.537666},
url = {https://juser.fz-juelich.de/record/892715},
}