通过贝叶斯优化深度学习从步态信号诊断帕金森病和严重性评估
Mehmet Meral1, Ferdi Ozbilgin2
1Department of Neurosurgery, Private Erciyes Hospital, Kayseri 38020, Türkiye.
Diagnostics (Basel, Switzerland)
|August 28, 2025
概括
使用垂直地面反应力 (VGRF) 步态数据的深度学习模型可以准确地检测帕金森病 (PD) 和其严重程度. 贝叶斯优化的LSTM和CNN模型显示了早期诊断和分期的高性能.
科学领域:
- 生物医学工程
- 机器学习
- 神经学
背景情况:
- 早期诊断帕金森病对于及时干预和改善生活质量至关重要.
- 步行分析提供了一种非侵入性方法来检测PD的微妙运动障碍.
- 垂直地面反应力 (VGRF) 信号为PD评估提供了有价值的信息.
研究的目的:
- 评估和比较贝叶斯优化的卷积神经网络 (CNN) 和长期短期记忆 (LSTM) 模型用于PD检测和分期.
- 将这些深度学习模型直接应用于VGRF信号.
- 在不同的VGRF信号窗口长度中评估模型的性能.
主要方法:
- VGRF录音分为5,10,15,20和25秒的时间窗口.
- 分段被规范化并用于CNN和LSTM网络的输入.
- 用五倍交叉验证的贝叶斯优化用于超参数调整.
主要成果:
- 在10秒检测PD时,LSTM模型达到99. 42%的准确度 (AUC=1,000),而在5秒检测Hoehn-Yahr时,准确度为98. 24%.
- 在二进制分类中,CNN模型达到98.46%的准确率 (AUC=0.998),在多类分类中达到96.62%的准确率 (AUC=0.998).
- 这两种模型都表现出高效率,LSTM在时间模式识别方面略有优势.
结论:
- 贝叶斯优化的CNN和LSTM模型使用VGRF数据有效地检测和分期帕金森病.
- LSTM模型在捕捉时间步行动态方面表现出色,而CNN则在较低的计算成本下提供了相似的性能.
- 对步态数据进行端到端的深度学习为非侵入性PD评估提供了有前途的途径.
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