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Rathee, R and Rallabandi, VPS and Roy, PK (2016) Related Differences in White Matter Integrity in Healthy Human Brain: Evidence from Structural MRI and Diffusion Tensor Imaging. Magnetic Resonance Insights, 9. pp. 9-20.

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Abstract

The aim is to investigate the relationship between microstructural white matter (WM) diffusivity indices and macrostructural WM volume (WMV) among healthy individuals (20–85 years). Whole-brain diffusion measures were calculated from diffusion tensor imaging using FMRIB software library while WMV was estimated through voxel-based morphometry, and voxel-based analysis was carried out using tract-based spatial statistics. Our results revealed that mean diffusivity, axial diffusivity, and radial diffusivity had shown good correlation with WMV but not for fractional anisotropy (FA). Voxel-wise tract-based spatial statistics analysis for FA showed a significant decrease in four regions for middle-aged group compared to young-aged group, in 22 regions for old-aged group compared to middle-aged group, and in 26 regions for old-aged group compared to young-aged group (P < 0.05). We found significantly lower WMV, FA, and mean diffusivity values in females than males and inverted-U trend for FA in males. We conclude differential age- and gender-related changes for structural WMV and WM diffusion indices.

Item Type: Article
Subjects: Neurodegenerative Disorders
Neuro-Oncological Disorders
Informatics and Imaging
Depositing User: Dr. D.D. Lal
Date Deposited: 04 May 2017 07:11
Last Modified: 15 May 2018 06:23
URI: http://nbrc.sciencecentral.in/id/eprint/51

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