Multicontrast MRI of remyelination in the central nervous system

2005 | journal article

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​Multicontrast MRI of remyelination in the central nervous system​
Merkler, D. ; Boretius, S. ; Stadelmann, C. ; Ernsting, T.; Michaelis, T. ; Frahm, J.   & Brück, W. ​ (2005) 
NMR in Biomedicine18(6) pp. 395​-403​.​ DOI: 

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Merkler, Doron ; Boretius, Susann ; Stadelmann, Christine ; Ernsting, Tristan; Michaelis, Thomas ; Frahm, Jens ; Brück, Wolfgang 
Although magnetic resonance imaging (MRI) represents the most sensitive tool for the detection of white matter abnormalities in patients with multiple sclerosis (MS), the heterogeneity of MS placques severely hampers the elucidation of specific pathophysiological processes. In order to identify putative MRI markers for de- and remyelination, we employed the cuprizone mouse model which leads to a selective and reversible demyelination of the corpus callosum with little or no axonal damage. Apart from histopathology, animals were studied with high-resolution three-dimensional MRI in vivo using multiple contrasts. While individual MRI findings significantly correlated with electron microscopy, the differentiation of regions with normal, demyelinated or remyelinated white matter by one contrast alone was less specific than by histology or electron microscopy. However, an accurate MRI prediction of the in vivo myelin status was achieved by a discriminant function analysis using a combination of T1, T2 and magnetization transfer contrast. With a correct assignment of 95% of all animals examined, the procedure will allow for the survey of new therapeutic approaches aiming at improved remyelination. Copyright © 2005 John Wiley & Sons, Ltd.
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NMR in Biomedicine 



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