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@ARTICLE{Dayan:188297,
author = {Dayan, Michael and Kreutzer, Sylvia and Clark, Chris A.},
title = {{T}ractography of the optic radiation: a repeatability and
reproducibility study},
journal = {NMR in biomedicine},
volume = {28},
number = {4},
issn = {0952-3480},
address = {New York, NY},
publisher = {Wiley},
reportid = {FZJ-2015-01719},
pages = {423–431},
year = {2015},
abstract = {Our main objective was to evaluate the repeatability and
reproducibility of optic radiation (OR) reconstruction from
diffusion MRI (dMRI) data. 14 adults were scanned twice with
the same 60-direction dMRI sequence. Peaks in the diffusion
profile were estimated with the single tensor (ST), Q-ball
(QSH) and persistent angular structure (PAS) methods.
Segmentation of the OR was performed by two experimenters
with probabilistic tractography based on a manually drawn
region-of-interest (ROI) protocol typically employed for OR
segmentation, with both standard and extended sets of ROIs.
The repeatability and reproducibility were assessed by
calculating the intra-class correlation coefficient (ICC) of
intra- and inter-rater experiments, respectively. ICCs were
calculated for commonly used dMRI metrics (FA, MD, AD, RD)
and anatomical dimensions of the optic radiation (distance
from Meyer's loop to the temporal pole, ML-TP), as well as
the Dice similarity coefficient (DSC) between the raters’
OR segmentation. Bland–Altman plots were also calculated
to investigate bias and variability in the reproducibility
measurements.The OR was successfully reconstructed in all
subjects by both raters. The ICC was found to be in the good
to excellent range for both repeatability and
reproducibility of the dMRI metrics, DSC and ML-TP distance.
The Bland–Altman plots did not show any apparent
systematic bias for any quantities.Overall, higher ICC
values were found for the multi-fiber methods, QSH and PAS,
and for the standard set of ROIs. Considering the good to
excellent repeatability and reproducibility of all the
quantities investigated, these findings support the use of
multi-fiber OR reconstruction with a limited number of
manually drawn ROIs in clinical applications utilizing
either OR microstructure characterization or OR dimensions,
as is the case in neurosurgical planning for temporal
lobectomy},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000351474500001},
doi = {10.1002/nbm.3266},
url = {https://juser.fz-juelich.de/record/188297},
}