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神经影像学追踪ALS进展

Tracking ALS progression using neuroimaging
课程网址: http://videolectures.net/encals2017_agosta_neuroimaging/  
主讲教师: Federica Agosta
开课单位: 圣拉斐尔大学
开课时间: 2017-01-21
课程语种: 英语
中文简介:
目前对神经退行性疾病,包括肌萎缩性侧索硬化症(ALS)的认识,由于对其如何通过中枢神经系统进展的了解不足而受到限制。在这些患者中,新的神经成像技术可能有助于阐明大脑网络中潜在病理的空间、时间依赖性扩张。关于肌萎缩侧索硬化症(ALS)的纵向磁共振成像(MRI)研究很少,MRI作为监测疾病进展的标志物的真正潜力尚待确定。对ALS患者的纵向分析显示,运动皮质、颞叶皮质和额顶叶皮质的皮质厚度减少,皮质脊髓束、胼胝体和额叶区的磁共振弥散张量改变。图论工具在磁共振成像连通性研究中的最新发展和应用为探索基于网络的神经退行性变的原理和解决尚未解决的问题提供了一个独特的机会。图论在大脑连通性数据上的应用使以前的MRI发现有了一个新的视角,这表明节点特性可能在神经退行性疾病的病理生理学中起着至关重要的作用。此外,图论的一个主要优点是,它可以用来生成和测试竞争的生成模型,用来解释在疾病的一系列拓扑属性中观察到的变化。网络科学实验将为开发新的工具铺平道路,以了解ALS的生物学基础,并确定个体化、早期干预措施以改变疾病进展。
课程简介: Current knowledge of neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS) is limited by poor understanding of how they progress through the central nervous system. In these patients, novel neuroimaging techniques may help to elucidate the spatial, time-dependent expansion of the underlying pathology across brain networks. Few magnetic resonance imaging (MRI) longitudinal studies have been published on ALS, and the true potential of MRI as a marker for monitoring disease progression has yet to be defined. Longitudinal analyses of ALS patients showed a decrease of cortical thickness in motor, temporal, and fronto-parietal cortices, as well as diffusion tensor MRI changes in the corticospinal tract, corpus callosum and frontal regions. The recent development and application of graph theoretical tools to MRI connectivity research offer a unique opportunity to explore principles of network-based neurodegeneration and to address unanswered questions. The application of graph theory on brain connectivity data put previous MRI findings in a new perspective, suggesting that node properties are likely to play a critical role in the pathophysiology of neurodegenerative diseases. Moreover, a major strength of graph theory is that it can be used to generate and test competing generative models designed to explain observed variations across a range of topological properties in the disease. Network science experiments will pave the way to the development of novel tools for understanding the biological underpinnings of ALS, and to identifying individualized, early interventions to modify disease progression.
关 键 词: 肌萎缩性侧索硬化症; 神经; 脊髓束
课程来源: 视频讲座网
数据采集: 2020-12-14:yxd
最后编审: 2020-12-14:yxd
阅读次数: 40