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@ARTICLE{Grinberg:821114,
author = {Grinberg, Farida and Maximov, Ivan I. and Farrher, Ezequiel
and Neuner, Irene and Amort, Laura and Thönneßen, Heike
and Oberwelland, Eileen and Konrad, Kerstin and Shah, N. J.},
title = {{D}iffusion kurtosis metrics as biomarkers of
microstructural development: {A} comparative study of a
group of children and a group of adults},
journal = {NeuroImage},
volume = {144},
number = {Part A},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2016-06357},
pages = {12-22},
year = {2017},
abstract = {The most common modality of diffusion MRI used in the
ageing and development studies is diffusion tensor imaging
(DTI) providing two key measures, fractional anisotropy and
mean diffusivity. Here, we investigated diffusional changes
occurring between childhood (average age 10.3 years) and
mitddle adult age (average age 54.3 years) with the help of
diffusion kurtosis imaging (DKI), a recent novel extension
of DTI that provides additional metrics quantifying
non-Gaussianity of water diffusion in brain tissue. We
performed voxelwise statistical between-group comparison of
diffusion tensor and kurtosis tensor metrics using two
methods, namely, the tract-based spatial statistics (TBSS)
and the atlas-based regional data analysis. For the latter,
fractional anisotropy, mean diffusivity, mean diffusion
kurtosis, and other scalar diffusion tensor and kurtosis
tensor parameters were evaluated for white matter fibres
provided by the Johns-Hopkins-University Atlas in the FSL
toolkit (http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/Atlases).
Within the same age group, all evaluated parameters varied
depending on the anatomical region. TBSS analysis showed
that changes in kurtosis tensor parameters beyond
adolescence are more widespread along the skeleton in
comparison to the changes of the diffusion tensor metrics.
The regional data analysis demonstrated considerably larger
between-group changes of the diffusion kurtosis metrics than
of diffusion tensor metrics in all investigated regions. The
effect size of the parametric changes between childhood and
middle adulthood was quantified using Cohen's d. We used
Cohen's d related to mean diffusion kurtosis to examine
heterogeneous maturation of various fibres. The largest
changes of this parameter (interpreted as reflecting the
lowest level of maturation by the age of children group)
were observed in the association fibres, cingulum (gyrus)
and cingulum (hippocampus) followed by superior longitudinal
fasciculus and inferior longitudinal fasciculus. The
smallest changes were observed in the commissural fibres,
forceps major and forceps minor. In conclusion, our data
suggest that DKI is sensitive to developmental changes in
local microstructure and environment, and is particularly
powerful to unravel developmental differences in major
association fibres, such as the cingulum and superior
longitudinal fasciculus.},
cin = {INM-3 / INM-4 / JARA-BRAIN},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406 / I:(DE-Juel1)INM-4-20090406 /
$I:(DE-82)080010_20140620$},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000390982800002},
doi = {10.1016/j.neuroimage.2016.08.033},
url = {https://juser.fz-juelich.de/record/821114},
}