Qu’attendre des nouvelles techniques IRM dans l’étude de la sclérose en plaques
| Autor: | Bertrand Audoin, J.P. Ranjeva, Jean Pelletier |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
In vivo magnetic resonance spectroscopy
Magnetization Transfer MRI medicine.diagnostic_test business.industry Multiple sclerosis Axonal loss Magnetic resonance imaging Grey matter medicine.disease Central nervous system disease Nuclear magnetic resonance medicine.anatomical_structure Neurology medicine Neurology (clinical) business Diffusion MRI |
| Zdroj: | Revue Neurologique. 163:663-666 |
| ISSN: | 0035-3787 |
| Popis: | Although conventional magnetic resonance imaging (MRI) is used for diagnosing multiple sclerosis (MS) and monitoring disease activity and course, the correlation between conventional MRI data and clinical findings remains weak. This "clinical-MRI paradox" could be partly due to the lack of MRI specificity related to the heterogeneous pathological substrates of MS and to its inability to quantify the extent of damage in the normal-appearing tissue. Recently, non-conventional MRI techniques, including magnetization transfer MRI, diffusion tensor MRI, and proton MR spectroscopy have been applied to improve our understanding of the pathophysiology of MS. These techniques may provide information about structural and biochemical changes occurring within and outside macroscopic MS lesions (inflammation, demyelination, axonal loss), in particular in the normal-appearing white and grey matter. These techniques could also significantly improve our ability to monitor inflammatory demyelination and axonal injury. In the same way, functional MRI gives us the potential substrate to assess the mechanisms of adaptive cortical reorganization, which may limit the irreversible consequences of MS tissue injury. |
| Databáze: | OpenAIRE |
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