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Updated: Sep 20, 2026
Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
[Diffusion tensor MRI of Wallerian degeneration: a case report]
C Oppenheim1, E Touzé, C Poupon
1Département d'Imagerie Morphologique et Fonctionnelle, Université Paris V, Centre Hospitalier Sainte-Anne, Paris, France. oppenheim@chsa.broca.inserm.fr
Abstract:
Diffusion tensor imaging allows a 3D analysis of water molecular motion and an exploration of white matter tracts integrity and orientation. We report a diffusion tensor study of wallerian degeneration of the corticospinal tract following a capsulo-lenticular hemorrhage in a 49-year old man. Reduced anisotropy (loss of fiber coherence) with preserved diffusivity of the damaged corticospinal tract was observed. This highlights the feasibility of diffusion tensor imaging on clinical MR units and its ability to quantify the degree of white matter tract destruction.
Insights
Diffusion tensor imaging (DTI) can assess white matter tract integrity after brain injury. A case study showed DTI can detect wallerian degeneration, quantifying white matter damage following hemorrhage.
Area of Science:
- Neuroimaging
- White Matter Integrity
- Diffusion Tensor Imaging
Background:
- Diffusion tensor imaging (DTI) provides 3D analysis of water diffusion to assess white matter tract integrity and orientation.
- Wallerian degeneration is a process of axonal degeneration following injury to the white matter tracts.
Observation:
- A diffusion tensor imaging study was conducted on a 49-year-old man with wallerian degeneration of the corticospinal tract after a capsulo-lenticular hemorrhage.
- The study observed reduced anisotropy, indicating a loss of fiber coherence in the damaged corticospinal tract.
Findings:
- Preserved diffusivity was noted in the damaged corticospinal tract despite reduced anisotropy.
- This finding suggests that DTI can detect and quantify white matter tract destruction.
Implications:
- Diffusion tensor imaging is feasible on clinical magnetic resonance imaging units.
- DTI can serve as a valuable tool for quantifying the extent of white matter tract damage in clinical settings.
