Journal article
Disability in progressive MS is associated with T2 lesion changes
Background: Progressive multiple sclerosis (MS) is characterized by diffuse changes on brain magnetic resonance imaging (MRI), which complicates the use of MRI as a diagnostic and prognostic marker. The relationship between MRI measures (conventional and non-conventional) and clinical disability in progressive MS therefore warrants further investigation.
Objective: To investigate the relationship between clinical disability and MRI measures in patients with progressive MS. Methods: Data from 93 primary and secondary progressive MS patients who had participated in 3 phase 2 clinical trials were included in this cross-sectional study. From 3 T MRI baseline scans we calculated total T2 lesion volume and analysed magnetisation transfer ratio (MTR) and the diffusion tensor imaging indices fractional anisotropy (FA) and mean diffusivity (MD) in T2 lesions, normal-appearing white matter (NAWM) and cortical grey matter.
Disability was assessed by the Expanded Disability Status Scale (EDSS) and the MS functional composite. Results: T2 lesion volume was associated with impairment by all clinical measures. MD and MTR in T2 lesions were significantly related to disability, and lower FA values correlated with worse hand function in NAWM.
In multivariable analyses, increasing clinical disability was independently correlated with increasing T2 lesion volumes and MTR in T2 lesion. Conclusion: In progressive MS, clinical disability is related to lesion volume and microstructure.
Language: | English |
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Year: | 2017 |
Pages: | 73-77 |
ISSN: | 22110356 and 22110348 |
Types: | Journal article |
DOI: | 10.1016/j.msard.2017.12.010 |
ORCIDs: | Dyrby, Tim Bjørn |
Diffusion tensor imaging Expanded disability status scale Magnetic Resonance Imaging Magnetisation transfer ratio Multiple Sclerosis Multiple sclerosis functional composite
Brain Brain/diagnostic imaging Cohort Studies Cross-Sectional Studies Diffusion Tensor Imaging Disability Evaluation Female Gray Matter Gray Matter/diagnostic imaging Humans Magnetic resonance imaging Male Middle Aged Multiple Sclerosis, Chronic Progressive Multiple Sclerosis, Chronic Progressive/diagnostic imaging Multiple sclerosis White Matter White Matter/diagnostic imaging