Oh, J; Ontaneda, D; Azevedo, C; Klawiter, EC; Absinta, M; Arnold, DL; Bakshi, R; ... Reich, DS; + view all Oh, J; Ontaneda, D; Azevedo, C; Klawiter, EC; Absinta, M; Arnold, DL; Bakshi, R; Calabresi, PA; Crainiceanu, C; Dewey, B; Freeman, L; Gauthier, S; Henry, R; Inglese, M; Kolind, S; Li, DKB; Mainero, C; Menon, RS; Nair, G; Narayanan, S; Nelson, F; Pelletier, D; Rauscher, A; Rooney, W; Sati, P; Schwartz, D; Shinohara, RT; Tagge, I; Traboulsee, A; Wang, Y; Yoo, Y; Yousry, T; Zhang, Y; Sicotte, NL; Reich, DS; - view fewer (2019) Imaging outcome measures of neuroprotection and repair in MS. Neurology , 92 (11) pp. 519-533. 10.1212/WNL.0000000000007099.

Text Yousry NAIMS Workshop Toronto_19Oct2018.pdf - Accepted Version Access restricted to UCL open access staff Download (1MB)

Abstract

Objective To summarize current and emerging imaging techniques that can be used to assess neuroprotection and repair in multiple sclerosis (MS), and to provide a consensus opinion on the potential utility of each technique in clinical trial settings. Methods Clinicians and scientists with expertise in the use of MRI in MS convened in Toronto, Canada, in November 2016 at a North American Imaging in Multiple Sclerosis (NAIMS) Cooperative workshop meeting. The discussion was compiled into a manuscript and circulated to all NAIMS members in attendance. Edits and feedback were incorporated until all authors were in agreement. Results A wide spectrum of imaging techniques and analysis methods in the context of specific study designs were discussed, with a focus on the utility and limitations of applying each technique to assess neuroprotection and repair. Techniques were discussed under specific themes, and included conventional imaging, magnetization transfer ratio, diffusion tensor imaging, susceptibility-weighted imaging, imaging cortical lesions, magnetic resonance spectroscopy, PET, advanced diffusion imaging, sodium imaging, multimodal techniques, imaging of special regions, statistical considerations, and study design. Conclusions Imaging biomarkers of neuroprotection and repair are an unmet need in MS. There are a number of promising techniques with different strengths and limitations, and selection of a specific technique will depend on a number of factors, notably the question the trial seeks to answer. Ongoing collaborative efforts will enable further refinement and improved methods to image the effect of novel therapeutic agents that exert benefit in MS predominately through neuroprotective and reparative mechanisms.

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