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Review
. 2021 Jun 22;144(5):1296-1311.
doi: 10.1093/brain/awab029.

Quantitative magnetic resonance imaging towards clinical application in multiple sclerosis

Collaborators, Affiliations
Review

Quantitative magnetic resonance imaging towards clinical application in multiple sclerosis

Cristina Granziera et al. Brain. .

Abstract

Quantitative MRI provides biophysical measures of the microstructural integrity of the CNS, which can be compared across CNS regions, patients, and centres. In patients with multiple sclerosis, quantitative MRI techniques such as relaxometry, myelin imaging, magnetization transfer, diffusion MRI, quantitative susceptibility mapping, and perfusion MRI, complement conventional MRI techniques by providing insight into disease mechanisms. These include: (i) presence and extent of diffuse damage in CNS tissue outside lesions (normal-appearing tissue); (ii) heterogeneity of damage and repair in focal lesions; and (iii) specific damage to CNS tissue components. This review summarizes recent technical advances in quantitative MRI, existing pathological validation of quantitative MRI techniques, and emerging applications of quantitative MRI to patients with multiple sclerosis in both research and clinical settings. The current level of clinical maturity of each quantitative MRI technique, especially regarding its integration into clinical routine, is discussed. We aim to provide a better understanding of how quantitative MRI may help clinical practice by improving stratification of patients with multiple sclerosis, and assessment of disease progression, and evaluation of treatment response.

Keywords: imaging; multiple sclerosis; quantitative MRI.

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Figures

Figure 1
Figure 1
Information provided by quantitative MRI about key features of multiple sclerosis pathology for clinical applications in patients with multiple sclerosis. Quantitative MRI provides information about normal-appearing tissue pathology, multiple sclerosis lesion heterogeneity, remyelination, and blood–brain barrier disruption. dia-mag = diamagnetic; para-mag = paramagnetic.
Figure 2
Figure 2
Clinical maturity of the main quantitative MRI approaches. Schematic representation of quantitative MRI current development stages towards clinical use.

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