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    Longitudinal persistence of meningeal enhancement on postcontrast 7T 3D-FLAIR MRI in multiple sclerosis

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    Author
    Jonas, S.N.
    Izbudak, I.
    Frazier, A.A.
    Date
    2018
    Journal
    American Journal of Neuroradiology
    Publisher
    American Society of Neuroradiology
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://dx.doi.org/10.3174/ajnr.A5796
    Abstract
    BACKGROUND AND PURPOSE: Preliminary research has demonstrated that postgadolinium 3D-FLAIR MR imaging at 7T may be a valuable tool for detecting abnormal meningeal enhancement and inflammation in MS; however, researchers have not systematically investigated its longitudinal persistence.Wehypothesized that persistence of meningeal enhancement in MS varies on the basis of pattern of enhancement as well as demographic and clinical factors such as treatment status, disease phenotype, and disability score. MATERIALS AND METHODS: Thirty-one subjects with MS were prospectively scanned before and after intravenous contrast administration at 2 time points, approximately 1 year apart. Fifteen subjects in the cohort were scanned at another time approximately 1 year later. Foci of enhancement were categorized into 4 subtypes: Subarachnoid spread/fill, subarachnoid nodular, vessel wall, and dural foci. We reviewed follow-up scans to determine whether foci changed between time points and then compared persistence with demographic and clinical variables. RESULTS: Persistence ranged from 71% to 100% at 1 year and 73% to 100% at 2 years, depending on the enhancement pattern. Subarachnoid spread/fill and subarachnoid nodular subtypes persisted less often than vessel wall and dural foci. Persistence was not significantly different between those on/off treatment and those with progressive/nonprogressive disease phenotypes. The number of persisting foci was significantly different in subjects with/without increasing Expanded Disability Status Scale scores (median, 12 versus 7.5, P =.04). CONCLUSIONS: Longitudinal persistence of meningeal enhancement on 3D-FLAIR at 7T in MS varies by pattern of enhancement and correlates with worsening disability; however, it is not significantly different in those on/off treatment or in those with progressive/ nonprogressive disease phenotypes. Copyright 2018 American Society of Neuroradiology. All rights reserved.
    Sponsors
    This study was funded, in part, by grants from EMD Serono and the National Institutes of Health (National Institute of Neurological Disorders and Stroke 1K23NS072366-01A1).
    Keyword
    Multiple Sclerosis
    Atrophy
    matter WM
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054595829&doi=10.3174%2fajnr.A5796&partnerID=40&md5=4d60831b0686f564c7c2ba3155a02954; http://hdl.handle.net/10713/8918
    ae974a485f413a2113503eed53cd6c53
    10.3174/ajnr.A5796
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    UMB Open Access Articles 2018

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