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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

Cortical diffusion-tensor imaging abnormalities in multiple sclerosis: a 3-year longitudinal study.

Massimiliano Calabrese¹, Francesca Rinaldi, Dario Seppi

¹Department of Neurosciences, Multiple Sclerosis Centre of Veneto Region-First Neurology Clinic, University Hospital of Padova, Via Giustiniani 5, 35128 Padua, Italy. calabresem@hotmail.it

|October 28, 2011

Summary

This summary is machine-generated.

Diffusion-tensor imaging combined with double inversion recovery improves detection of multiple sclerosis (MS) cortical changes. Increased normal-appearing gray matter fractional anisotropy (FA) in MS patients correlates with disease severity and lesion volume.

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Area of Science:

Neuroimaging
Neurology
Radiology

Background:

Multiple sclerosis (MS) involves complex structural changes in the brain's cortex.
Early detection of cortical alterations is crucial for understanding MS progression.

Purpose of the Study:

To assess the utility of combining diffusion-tensor imaging (DTI) with double inversion recovery (DIR) for enhanced detection of MS-related cortical structural changes.
To investigate the relationship between DTI metrics in normal-appearing gray matter (NAGM) and clinical outcomes in MS patients.

Main Methods:

A 3-year longitudinal study included 168 relapsing-remitting MS patients and 45 controls.
Magnetic resonance imaging (MRI) including DTI and DIR was performed.
Analysis included cortical lesion volume, white matter lesion volume (WMLV), and fractional anisotropy (FA) and mean diffusivity (MD) of NAGM.

Main Results:

At baseline, NAGM-FA was significantly higher in MS patients than controls and correlated with EDSS score and cortical lesion volume.
Over 3 years, NAGM-FA increased in MS patients, particularly those with worsening disability.
NAGM-FA and T2 WMLV were independent predictors of EDSS score.

Conclusions:

MS patients exhibit increased FA in NAGM, which correlates with cortical lesion burden and clinical disability.
Combined DTI and DIR imaging shows promise for detecting subtle cortical changes in MS.
DTI-derived NAGM metrics are valuable biomarkers for MS progression and disability.