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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Combining voxel-based morphometry and diffusion tensor imaging to detect age-related brain changes
Jan T Lehmbeck1, Stefanie Brassen, Wolfgang Weber-Fahr
1Neuroimage Nord, Psychiatry, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Neuroreport
|March 18, 2006
Summary
Aging in women is associated with reduced grey matter density and white matter integrity, particularly in frontal and limbic regions. Advanced neuroimaging techniques effectively detect these age-related brain changes.
Area of Science:
- Neuroimaging
- Gerontology
- Brain Anatomy
Background:
- Aging is a complex process affecting brain structure and function.
- Neuroimaging techniques are crucial for understanding age-related brain modifications.
Purpose of the Study:
- To investigate age-related changes in brain structure using optimized voxel-based morphometry (VBM) and diffusion tensor imaging (DTI).
- To compare grey matter density and white matter integrity between younger and older women.
Main Methods:
- Grey matter density maps were analyzed using VBM.
- White matter fractional anisotropy (FA) maps were analyzed using DTI-VBM.
- Discriminant analysis was employed to identify key differentiating brain regions.
Main Results:
- Older women showed decreased grey matter density in frontal, limbic, parietal, and temporal lobes.
- Reduced white matter fractional anisotropy was observed in older women.
- Four specific grey and white matter areas in the frontal and limbic regions effectively distinguished between age groups.
Conclusions:
- Optimized VBM and DTI-VBM are effective for detecting age-related brain changes.
- Combining VBM and DTI-VBM offers high accuracy in identifying the neural correlates of aging.
- These findings highlight structural brain differences associated with aging in women.
