Deep gray matter involvement on brain MRI scans is associated with clinical progression in multiple sclerosis

Mohit Neema, Ashish Arora, Brian C. Healy, Zachary D. Guss, Steven D. Brass, Yang Duan, Guy J. Buckle, Bonnie I. Glanz, Lynn Stazzone, Samia J. Khoury, Howard L. Weiner, Charles R G Guttmann, Rohit Bakshi

Research output: Contribution to journalArticlepeer-review

102 Scopus citations

Abstract

BACKGROUND: Conventional brain MRI lesion measures have unreliable associations with clinical progression in multiple sclerosis (MS). Gray matter imaging may improve clinical-MRI correlations. METHODS: We tested if gray matter MRI measures and conventional measures of lesions/atrophy predicted clinical progression in a 4-year longitudinal study of 97 patients with MS. Baseline and follow-up brain MRI were analyzed for basal ganglia and thalamic normalized T2 signal intensity, whole brain T2-hyperintense lesion volume, and whole brain atrophy. Logistic regression tested the ability of baseline or on-study change in MRI to predict disability progression, as reported by area under the receiver operator characteristics curve (AUC). RESULTS: Lower caudate T2-intensity at baseline (P =.04; AUC =.69) and on-study decreasing T2-intensity in the putamen (P =.03; AUC =.70) and thalamus (P =.01; AUC =.71) were the MRI variables associated with clinical progression when regression modeling was adjusted for length of follow-up interval, baseline EDSS, disease duration, age, and sex. CONCLUSIONS: Gray matter T2-hypointensity, suggestive of excessive iron deposition is associated with worsening disability in patients with MS. Gray matter MRI assessment may be able to capture neurodegenerative aspects of the disease, with more clinical relevance than derived from conventional MRI measures.

Original languageEnglish (US)
Pages (from-to)3-8
Number of pages6
JournalJournal of Neuroimaging
Volume19
Issue number1
DOIs
StatePublished - Jan 2009
Externally publishedYes

Keywords

  • Brain atrophy
  • Iron
  • MRI
  • Multiple sclerosis
  • Neurologic disability
  • T2 hyperintense lesions
  • T2 hypointensity

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

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