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Updated: May 30, 2026
Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
Published on: February 19, 2021
The role of advanced magnetic resonance imaging techniques in primary progressive MS
Maria A Rocca1, Martina Absinta, Massimo Filippi
1Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, Vita-Salute San Raffaele University, Via Olgettina 60, 20132 Milan, Italy.
Abstract:
Primary progressive multiple sclerosis (PPMS) is characterized by a steady progression of irreversible disability from the onset of the disease. Although magnetic resonance imaging (MRI) is a valuable tool to quantify the disease burden in the brain and spinal cord of patients with MS, measures derived from conventional MRI, including T2-visible lesions, gadolinium-enhancing lesions and atrophy, are correlated only weakly with the clinical manifestations of PPMS. On the contrary, advanced MRI techniques are contributing significantly to the understanding of the mechanisms underlying the irreversible accumulation of disability in PPMS patients. Data from quantitative MRI studies suggest that the extent and topography of "diffuse" damage in different central nervous system (CNS) compartments (i.e. normal-appearing brain white matter and grey matter and the spinal cord) is associated with the severity of disability in PPMS and can predict subsequent medium-term disease evolution. Functional MRI studies have shown that the impairment of the adaptive capacity of the cortex to limit the clinical consequences of structural CNS damage is yet another factor contributing to the manifestations of this condition.
Insights
Advanced magnetic resonance imaging (MRI) techniques reveal diffuse central nervous system (CNS) damage in primary progressive multiple sclerosis (PPMS), correlating with disability progression. Functional MRI highlights impaired cortical adaptation as a factor in PPMS manifestations.
Area of Science:
- Neuroimaging
- Neurology
- Medical Physics
Background:
- Primary progressive multiple sclerosis (PPMS) involves steady, irreversible disability accumulation.
- Conventional MRI metrics show weak correlation with clinical PPMS symptoms.
- Understanding PPMS pathophysiology requires advanced neuroimaging approaches.
Purpose of the Study:
- To investigate the utility of advanced MRI techniques in understanding PPMS.
- To correlate diffuse CNS damage with clinical disability in PPMS.
- To explore the role of cortical adaptation in PPMS.
Main Methods:
- Quantitative MRI to assess diffuse damage in brain white matter, grey matter, and spinal cord.
- Functional MRI to evaluate cortical adaptive capacity.
- Correlation analysis between MRI findings and clinical disability severity.
Main Results:
- Diffuse damage extent and location in the CNS are associated with PPMS disability severity.
- Quantitative MRI measures predict medium-term disease evolution in PPMS.
- Impaired cortical adaptive capacity contributes to PPMS clinical manifestations.
Conclusions:
- Advanced MRI techniques offer significant insights into PPMS disability.
- Diffuse CNS damage and impaired cortical function are key contributors to PPMS.
- Quantitative and functional MRI are crucial for understanding PPMS progression.
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