期刊
MULTIPLE SCLEROSIS JOURNAL
卷 28, 期 5, 页码 683-690出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1352458520958589
关键词
Multiple sclerosis; chronic active lesions; imaging; magnetic resonance imaging; positron emission tomography
资金
- ECTRIMS-MAGNIMS fellowship (2018)
- Guarantors of Brain 'Entry' clinical fellowship (2019)
- UK MS Society PhD fellowship (2020)
- European Society of Neuroradiology (ESNR)
- ECTRIMS/MAGNIMS Research Fellowship
- NIHR Biomedical Research Centre at UCLH
Chronic active lesions in multiple sclerosis (MS) are characterized by ongoing inflammation and tissue injury, and identifying imaging markers for these lesions is an important research goal.
New clinical activity in multiple sclerosis (MS) is often accompanied by acute inflammation which subsides. However, there is growing evidence that a substantial proportion of lesions remain active well beyond the acute phase. Chronic active lesions are most frequently found in progressive MS and are characterised by a border of inflammation associated with iron-enriched cells, leading to ongoing tissue injury. Identifying imaging markers for chronic active lesions in vivo are thus a major research goal. We reviewed the literature on imaging of chronic active lesion in MS, focussing on 'slowly expanding lesions' (SELs), detected by volumetric longitudinal magnetic resonance imaging (MRI) and 'rim-positive' lesions, identified by susceptibility iron-sensitive MRI. Both SELs and rim-positive lesions have been found to be prognostically relevant to future disability. Little is known about the co-occurrence of rims around SELs and their inter-relationship with other emerging techniques such as dynamic contrast enhancement (DCE) and positron emission tomography (PET).
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