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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Multiple prominent dilated perivascular spaces do not induce Wallerian degeneration as evaluated by diffusion tensor
1Department of Diagnostic Radiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
AJNR. American Journal of Neuroradiology
|February 14, 2007
Summary
Dilated perivascular spaces in the brain do not appear to damage nearby nerve fibers. Diffusion tensor imaging confirmed no signs of wallerian degeneration, suggesting these spaces are benign.
Area of Science:
- Neuroimaging
- Neuropathology
Background:
- Dilated perivascular spaces (DPVS) are common incidental findings on brain MRI.
- Their potential impact on adjacent neural structures remains largely uncharacterized.
Observation:
- A case study detailing conventional MRI and diffusion tensor imaging (DTI) findings.
- Multiple, prominent DPVS were identified in the left cerebral hemisphere.
Findings:
- DTI analysis of the corona radiata, internal capsule, and cerebral peduncle revealed no significant changes in fractional anisotropy or apparent diffusion coefficient.
- These DTI metrics indicate the absence of wallerian degeneration in the affected white matter tracts.
Implications:
- The findings suggest that prominent DPVS may not cause secondary axonal injury or white matter degeneration.
- This could help differentiate DPVS from other pathologies that affect white matter integrity.
