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多发性硬化症中的功能性MRI和认知-我们现在在哪里?
Farhad Mahmoudi1, Micheline McCarthy1, Flavia Nelson1
1Department of Neurology, University of Miami, Miami, Florida, USA.
概括
功能性MRI (fMRI) 揭示了多发性硬化症 (MS) 中的大脑连接性变化如何影响认知功能. 它显示了早期的补偿性大脑活动,后来下降,为MS相关的认知障碍提供了潜在的生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 放射学 放射学是一门学科.
- 认知科学 认知科学
背景情况:
- 多发性硬化症相关的认知障碍 (MSrCI) 在多发性硬化症 (MS) 患者中很普遍,导致严重的残疾.
- 目前的常规MRI缺乏可靠的指标来诊断MSrCI.
- 了解神经可塑性对于解释MS的认知变化至关重要.
研究的目的:
- 审查休息状态fMRI (rs-fMRI) 和基于任务的fMRI (tb-fMRI) 的应用,以了解MS的神经可塑性.
- 探索fMRI发现与MS (pwMS) 患者的认知变化之间的关系.
- 评估fMRI作为MSrCI的诊断工具和生物标记物的潜力.
主要方法:
- 在PubMed/Medline,Embase,Scopus和Web of Science的系统文献搜索pwMS中最近的fMRI认知研究.
- 分析 rs-fMRI 研究的结果,重点关注大脑连接和网络效率.
- 分析了 tb-fMRI 研究的结果,研究了大脑激活模式及其与疾病进展和认知状态的相关性.
主要成果:
- rs-fMRI研究表明大脑连接受损,网络效率降低,导致MS的认知障碍.
- tb-fMRI研究表明,作为补偿机制,最初增加了大脑活化,随后随着疾病的进展和认知能力的下降,活化减少.
- 这些模式表明,随着时间的推移,大脑的补偿能力逐渐耗尽.
结论:
- fMRI为MS相关认知障碍中神经可塑性和补偿机制提供了宝贵的见解.
- fMRI可以作为MSrCI的诊断工具.
- fMRI具有作为成像生物标志物的潜力,可以监测MS的疾病进展和认知变化.
关键词:
在MSMSMSMSMSMSMSMSMSMSMS中,我们可以看到认知障碍是一种认知障碍.功能性核磁共振成像 (MRI) 功能性核磁共振成像功能连接性的功能连接性多发性硬化症多发性硬化症休息状态的静止状态.基于任务的基于任务的任务更多相关视频
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