在休息状态fMRI数据的时间过程中检测阿尔茨海默病阶段和前性痴呆症,使用机器学习方法
Mohammad Amin Sadeghi1, Daniel Stevens2, Shinjini Kundu1
1Division of Neuroradiology, Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medicine, 600 N Wolfe St, Phipps B100F, Baltimore, MD, 21287, USA.
Journal of imaging informatics in medicine
|May 23, 2024
概括
准确诊断阿尔茨海默病 (AD) 和前性痴呆症 (FTD) 是至关重要的. 使用静止状态fMRI (rs-fMRI) 和临床数据的机器学习模型可以有效地区分这些条件和轻度认知障碍 (MCI).
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 人工智能的人工智能
背景情况:
- 区分神经退行性痴呆的亚型,如阿尔茨海默病 (AD) 和前性痴呆 (FTD) 是临床上具有挑战性的,因为重叠的症状和非典型的表现.
- 休息状态功能磁共振成像 (rs-fMRI) 揭示了与健康对照组 (HC) 相比,AD,FTD和轻度认知障碍 (MCI) 的病情特异性脑部变化.
研究的目的:
- 开发和评估一个机器学习模型,使用rs-fMRI数据准确分类AD,FTD,健康对照 (HC) 和MCI.
- 评估整合临床变量与成像数据对诊断模型性能的影响.
主要方法:
- rs-fMRI数据和临床信息来自ADNI和FTLDNI数据库.
- 使用预处理,特征提取和梯度增强的决策树与嵌套交叉验证来构建分类模型.
- 模型性能使用平衡精度,宏观平均AUC和宏观平均F1得分对未见测试数据进行评估.
主要成果:
- 仅使用rs-fMRI特征的模型实现了74.4%的平衡精度,将AD扫描错误分类为MCI.
- 整合临床变量显著改善了模型性能,产生了91.1%的平衡精度,0.99 AUC和0.92 F1评分.
- 多式模式模型在分类FTD (F1=0.99),HC (F1=0.99),MCI (F1=0.86) 中表现出高准确度,并且显著改善了AD分类 (F1=0.74).
结论:
- 结合rs-fMRI和临床数据的多式机器学习方法为区分AD,FTD,MCI和HC提供了强大而准确的方法.
- 这种方法具有显著的潜力,可以改善痴呆症亚型的早期和精确诊断,指导治疗策略.
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