使用大脑缩标志物个性化阿尔茨海默病的进展
Serena Verdi1,2, Saige Rutherford3,4, Charlotte Fraza3,4
1Centre for Medical Image Computing, University College London, London, UK.
medRxiv : the preprint server for health sciences
|July 3, 2023
概括
神经解剖学规范建模使用脑成像追踪阿尔茨海默病 (AD) 的进展. 轻度认知障碍 (MCI) 的异常值数量增加预测转化为AD,有助于早期检测.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 生物统计学 生物统计学
背景情况:
- 阿尔茨海默病 (AD) 呈现出显著的个体变化.
- 神经解剖学规范建模提供了一种捕捉这种变化的方法.
- 在轻度认知障碍 (MCI) 和AD中跟踪疾病进展至关重要.
研究的目的:
- 应用神经解剖学规范建模来跟踪MCI和AD的个体疾病进展.
- 评估区域Z-score和总异常值计数 (tOC) 在监测缩率方面的有用性.
- 调查tOC变化和MCI进展到AD之间的关系.
主要方法:
- 使用大量健康对照数据集 (n~58k) 来生成皮层厚度和皮层下体积的神经解剖学规范模型.
- 从4361个T1加权MRI扫描中计算区域Z分数.
- 确定了异常区域 (Z-score <-1.96) 并将它们总结为异常数的总计 (tOC).
主要成果:
- 在患有AD的患者和转换为AD的MCI个体中,tOC的变化率增加.
- 较高的每年tOC变化率与非成像标志物相关,并预测了MCI到AD进展.
- 根据大脑Z分数图,海马缩显示了最高的变化率.
结论:
- 区域异常点地图和tOC有效地追踪神经退行性疾病中的个体水平缩率.
- 这种方法提供了一种定量方法来监测疾病的进展.
- 神经解剖学规范建模显示,对早期发现和监测AD有希望.
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