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Magnetic resonance disease severity scale (MRDSS) for patients with multiple sclerosis: A longitudinal study
Journal article   Peer reviewed

Magnetic resonance disease severity scale (MRDSS) for patients with multiple sclerosis: A longitudinal study

Jennifer Moodie, Brian C. Healy, Guy J. Buckle, Susan A. Gauthier, Bonnie I. Glanz, Ashish Arora, Antonia Ceccarelli, Shahamat Tauhid, Xue-Mei Han, Arun Venkataraman, …
Journal of the neurological sciences, Vol.315(1-2), pp.49-54
04/15/2012
DOI: 10.1016/j.jns.2011.11.040
PMCID: PMC3319060
PMID: 22209496
url
https://www.ncbi.nlm.nih.gov/pmc/articles/3319060View
Open Access

Abstract

We previously described a composite MRI scale combining T1-lesions, T2-lesions and whole brain atrophy in multiple sclerosis (MS): the magnetic resonance disease severity scale (MRDSS). Test strength of the MRDSS vs. individual MRI measures for sensitivity to longitudinal change. We studied 84 MS patients over a 3.2±0.3year follow-up. Baseline and follow-up T2-lesion volume (T2LV), T1-hypointense lesion volume (T1LV), and brain parenchymal fraction (BPF) were measured. MRDSS was the combination of standardized T2LV, T1/T2 ratio and BPF. Patients had higher MRDSS at follow-up vs. baseline (p<0.001). BPF decreased (p<0.001), T1/T2 increased (p<0.001), and T2LV was unchanged (p>0.5). Change in MRDSS was larger than the change in MRI subcomponents. While MRDSS showed significant change in relapsing–remitting (RR) (p<0.001) and secondary progressive (SP) phenotypes (p<0.05), BPF and T1/T2 ratio changed only in RRMS (p<0.001). Longitudinal change in MRDSS was significantly different between RRMS and SPMS (p=0.0027); however, change in the individual MRI components did not differ. Evaluation with respect to predicting on-study clinical worsening as measured by EDSS revealed a significant association only for T2LV (p=0.038). Results suggest improved sensitivity of MRDSS to longitudinal change vs. individual MRI measures. MRDSS has particularly high sensitivity in RRMS.
Brain atrophy Measurement scales MRI Multiple sclerosis Neurologic disability T1 hypointense lesions T2 hyperintense lesions

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