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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
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Brain microstructural damage through serial diffusion tensor imaging and outcomes in Susac syndrome: A prospective
Augustin Gaudemer1, Marie-Cécile Henry-Feugeas1, Marion Peyre2
1Department of Radiology, Hospital Bichat-Claude Bernard, Assistance Publique Hôpitaux de Paris, Université Paris Cité, Paris, France.
European Journal of Neurology
|December 17, 2024
Summary
Diffusion tensor imaging (DTI) revealed microstructural damage in the corpus callosum of Susac syndrome patients, which is linked to long-term disability and inability to return to work.
Area of Science:
- Neuroimaging
- Neurology
- Radiology
Background:
- Susac syndrome (SuS) is a rare, immune-mediated microangiopathy affecting the brain, eyes, and ears.
- SuS can lead to significant, disabling neurological deficits.
- Understanding the long-term brain microstructural changes in SuS is crucial for predicting patient outcomes.
Purpose of the Study:
- To analyze brain microstructural damage using diffusion tensor imaging (DTI) in patients with Susac syndrome.
- To determine the association between DTI-derived microstructural changes and poor functional outcomes, specifically work resumption.
Main Methods:
- Prospective, multicenter cohort study (CarESS) of SuS patients with at least two brain MRI scans including DTI.
- Measurement of mean diffusivity (MD) and fractional anisotropy (FA) in the corpus callosum (whole, genu, splenium).
- Longitudinal analysis of DTI metrics and correlation with work resumption over a median follow-up of 6 years.
Main Results:
- Twenty-two SuS patients (73% female, mean age 36) were analyzed.
- Microstructural damage (increased MD, decreased FA) in the corpus callosum progressed during follow-up.
- Worsening corpus callosum microstructural damage was significantly associated with an inability to return to work.
Conclusions:
- Brain DTI can identify progressive microstructural damage in the corpus callosum in Susac syndrome.
- These DTI findings are significantly associated with long-term disability and impaired work resumption in SuS patients.
