脑血管疾病中白质通道与口语的相关性
Dana N Broberg1,2, Seyyed M H Haddad2, Katharine Aveni3,4
1Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, ON N6A 3K7, Canada.
Brain communications
|May 12, 2025
概括
口语评估显示白质的完整性,而不是体积,是脑血管疾病中认知功能的关键. 通常出现的白质的扩散MRI比超强度卷更好地预测语言表现.
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.
- 语言学的语言学.
背景情况:
- 口语评估显示,在脑血管疾病中检测认知障碍是有前途的.
- 这种人群中复杂口语的神经基础,特别是白质的参与,尚不清楚.
- 现有的研究往往忽略了微妙的白质变化,而倾向于大致的病变.
研究的目的:
- 调查白质完整性 (使用正常白质的扩散张力成像指标 - NAWM) 与脑血管疾病患者口语表现之间的关系.
- 为了比较NAWM扩散指标与白质超强度体积的实用性,与口语指标的相关性.
- 探索这些关联中的潜在的性别差异.
主要方法:
- 利用了127名参与者在安大略省神经退行性疾病研究倡议脑血管疾病队列中的基线MRI (结构和扩散) 和口语数据.
- 分析了口语样本的10个指标,包括语法,生产力,词汇多样性,流利性和信息内容.
- 在NAWM中,相关的白质超强度体积和扩散张力度 (微分异型,平均扩散度) 与使用规范相关性分析的口语测量,对男性和女性进行单独分析.
主要成果:
- 在NAWM中,口语表现与分数异构 (r=0.51) 和平均扩散率 (r=0.56) 有显著的相关性,特别是在左上纵向囊中.
- 白质超强度体积在分析的区域中没有与口语测量有显著的相关性 (r=0.41).
- 语法,流利性和信息内容是与白质微观结构相关的最强的口语组件;没有观察到显著的性别差异.
结论:
- 对NAWM微结构的扩散MRI指标比评估白质完整性对轻度脑血管疾病认知结果的影响的白质超强度体积指标更为敏感.
- 多域口语分析是一种有价值的工具,用于检测与脑血管疾病患者的潜在白质微观结构相关的认知状态变化,即使没有明显的失语症.
- 这些发现支持使用先进的神经成像技术和全面的语言评估,以更细致地了解脑血管疾病中的认知功能.
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