基于MRI的放射学和体积学,用于预测阿尔茨海默病的发病,并使用可解释的机器学习
Louise Bloch1, Katarzyna Borys2, Felix Nensa2
1Department of Computer Science, University of Applied Sciences and Arts Dortmund (FH Dortmund), Emil-Figge-Straße 42, Dortmund, 44227, North Rhine-Westphalia, Germany; Institute for Medical Informatics, Biometry and Epidemiology (IMIBE), University Hospital Essen, Hufelandstraße 55, Essen, 45147, North Rhine-Westphalia, Germany; Institute for Artificial Intelligence in Medicine (IKIM), University Hospital Essen, Hufelandstraße 55, Essen, 45147, North Rhine-Westphalia, Germany.
NeuroImage
|February 16, 2026
概括
这项研究引入了Radiomics功能,用于使用时间到事件模型改进阿尔茨海默病 (AD) 预测. 放射学通过分析MRI纹理和形状来增强长期AD风险评估,优于传统方法.
科学领域:
- 神经成像是一种神经成像.
- 机器学习 机器学习
- 无线电学 (Radiomics) 是一种放射学.
背景情况:
- 目前通过结构性MRI和ML检测阿尔茨海默氏病 (AD),往往错过了早期模式,专注于晚期缩.
- 深度学习模型考虑MRI信号强度,但缺乏超出注意区域的解释性.
- 现有的方法在整合各种数据类型以进行全面的AD风险预测方面扎.
研究的目的:
- 开发和解释使用Radiomics功能进行增强的阿尔茨海默病 (AD) 风险预测的时间到事件模型.
- 整合MRI纹理,形状和体积数据与临床和社会人口因素,以进行更全面的风险评估.
- 通过分析个体特征的贡献,提高AD检测模型的可解释性.
主要方法:
- 训练有素的时间到事件模型结合了结构性MRI的Radiomics特征.
- 利用了夏普利添加式解释 (SHAP) 和对模型可解释性的高级解释.
- 在ADNI内部和在AIBL和OASIS-3数据集外部验证的模型.
主要成果:
- 放射学具有显著增强的长期AD预测模型,在Brier分数中表现优于基线模型高达3.02%.
- 模型在外部验证数据集中表现出中度至高的可重复性,尽管数据分布存在差异.
- 确定了与阿尔茨海默氏症相关的特定放射学特征,包括关键大脑区域 (例如,脑内皮层,杏仁体) 的复杂纹理和不规则形状.
结论:
- 放射学特征为预测长期阿尔茨海默病 (AD) 风险提供了宝贵的见解,补充了传统的临床和成像数据.
- 开发的可解释模型为AD检测提供了更易于解释的方法,突出了MRI衍生的特定特征的影响.
- 这些发现支持将放射学纳入临床实践,以便更准确,更易于解释的阿尔茨海默病风险评估.
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