The relationship between gray matter quantitative MRI and disability in secondary progressive multiple sclerosis

  • Purpose: In secondary progressive Multiple Sclerosis (SPMS), global neurodegeneration as a driver of disability gains importance in comparison to focal inflammatory processes. However, clinical MRI does not visualize changes of tissue composition outside MS lesions. This quantitative MRI (qMRI) study investigated cortical and deep gray matter (GM) proton density (PD) values and T1 relaxation times to explore their potential to assess neuronal damage and its relationship to clinical disability in SPMS. Materials and Methods: 11 SPMS patients underwent quantitative T1 and PD mapping. Parameter values across the cerebral cortex and deep GM structures were compared with 11 healthy controls, and correlation with disability was investigated for regions exhibiting significant group differences. Results: PD was increased in the whole GM, cerebral cortex, thalamus, putamen and pallidum. PD correlated with disability in the whole GM, cerebral cortex, putamen and pallidum. T1 relaxation time was prolonged and correlated with disability in the whole GM and cerebral cortex. Conclusion: Our study suggests that the qMRI parameters GM PD (which likely indicates replacement of neural tissue with water) and cortical T1 (which reflects cortical damage including and beyond increased water content) are promising qMRI candidates for the assessment of disease status, and are related to disability in SPMS.
Author:René-Maxime GracienORCiDGND, Alina Jurcoane, Marlies WagnerORCiDGND, Sarah ReitzORCiDGND, Christoph Mayer, Steffen Volz, Stephanie-Michelle Hof, Vinzenz FleischerORCiDGND, Amgad Droby, Helmuth SteinmetzORCiDGND, Frauke ZippORCiDGND, Elke HattingenORCiDGND, Ralf DeichmannORCiD, Johannes Christian Klein
Pubmed Id:
Parent Title (English):PLoS One
Place of publication:Lawrence, Kan.
Document Type:Article
Date of Publication (online):2016/08/22
Date of first Publication:2016/08/11
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2016/09/26
Issue:(8): e0161036
Page Number:14
First Page:1
Last Page:14
Copyright: © 2016 Gracien et al. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Institutes:Medizin / Medizin
Angeschlossene und kooperierende Institutionen / MPI für Hirnforschung
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung 4.0