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@ARTICLE{Menzel:891045,
author = {Menzel, Miriam and Reuter, Jan André and Gräßel, David
and Huwer, Mike and Schlömer, Philipp and Amunts, Katrin
and Axer, Markus},
title = {{S}cattered {L}ight {I}maging: {R}esolving the substructure
of nerve fiber crossings in whole brain sections with
micrometer resolution},
journal = {NeuroImage},
volume = {233},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2021-01331},
pages = {117952 -},
year = {2021},
abstract = {For developing a detailed network model of the brain based
on image reconstructions, it is necessary to spatially
resolve crossing nerve fibers. The accuracy hereby depends
on many factors, including the spatial resolution of the
imaging technique. 3D Polarized Light Imaging (3D-PLI)
allows the three-dimensional reconstruction of nerve fiber
tracts in whole brain sections with micrometer in-plane
resolution, but leaves uncertainties in pixels containing
crossing fibers. Here we introduce Scattered Light Imaging
(SLI) to resolve the substructure of nerve fiber crossings.
The measurement is performed on the same unstained
histological brain sections as in 3D-PLI. By illuminating
the brain sections from different angles and measuring the
transmitted (scattered) light under normal incidence, light
intensity profiles are obtained that are characteristic for
the underlying brain tissue structure. We have developed a
fully automated evaluation of the intensity profiles,
allowing the user to extract various characteristics, like
the individual directions of in-plane crossing nerve fibers,
for each image pixel at once. We validate the reconstructed
nerve fiber directions against results from previous
simulation studies, scatterometry measurements, and fiber
directions obtained from 3D-PLI. We demonstrate in different
brain samples (human optic tracts, vervet monkey brain, rat
brain) that the 2D fiber directions can be reliably
reconstructed for up to three crossing nerve fiber bundles
in each image pixel with an in-plane resolution of up to 6.5
$\mu$m. We show that SLI also yields reliable fiber
directions in brain regions with low 3D-PLI signals coming
from regions with a low density of myelinated nerve fibers
or out-of-plane fibers. This makes Scattered Light Imaging a
promising new imaging technique, providing crucial
information about the organization of crossing nerve fibers
in the brain.},
cin = {INM-1 / JARA-HPC},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406 / $I:(DE-82)080012_20140620$},
pnm = {571 - Connectivity and Activity (POF3-571) / HBP SGA2 -
Human Brain Project Specific Grant Agreement 2 (785907) /
HBP SGA3 - Human Brain Project Specific Grant Agreement 3
(945539) / SMHB - Supercomputing and Modelling for the Human
Brain (HGF-SMHB-2013-2017) / 3D Reconstruction of Nerve
Fibers in the Human, the Monkey, the Rodent, and the Pigeon
Brain $(jinm11_20191101)$ / 5251 - Multilevel Brain
Organization and Variability (POF4-525)},
pid = {G:(DE-HGF)POF3-571 / G:(EU-Grant)785907 /
G:(EU-Grant)945539 / G:(DE-Juel1)HGF-SMHB-2013-2017 /
$G:(DE-Juel1)jinm11_20191101$ / G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)16},
pubmed = {33716156},
UT = {WOS:000647590900007},
doi = {10.1016/j.neuroimage.2021.117952},
url = {https://juser.fz-juelich.de/record/891045},
}