对外围静脉压的信号质量评估
Neng-Tai Chiu1, Beau Chuang1, Suthawan Anakmeteeprugsa2
1School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
Journal of clinical monitoring and computing
|November 2, 2023
概括
一个新的信号质量指数 (SQI) 在外围静脉压力 (PVP) 波形中量化心脏成分. 这种新的SQI准确地识别了高质量的PVP信号,超过了血液动力学研究的现有方法.
科学领域:
- 生物医学工程 生物医学工程
- 心血管生理学心血管生理学
- 信号处理 信号处理
背景情况:
- 周围静脉压 (PVP) 波形分析对于血液动力学评估至关重要.
- 目前评估PVP信号质量的方法有限.
- 在PVP中量化心脏部件的质量对于准确的解释至关重要.
研究的目的:
- 为外围静脉压 (PVP) 波形开发和验证一种新的信号质量指数 (SQI).
- 专注于在PVP信号中量化心脏部件的质量.
- 建立一个可靠的指标来识别高质量的PVP细分市场,以便进一步分析.
主要方法:
- 使用自适应非和模型建模PVP.
- 应用了同步挤压转换来隔离和量化心脏组件.
- 定义SQI为0和1之间的值,表示信号质量.
- 利用下体负压实验的数据库进行验证.
- 训练了一个支持向量机器 (SVM) 学习模型,用于实际应用.
主要成果:
- 开发的SQI表现出与专家标签 (AUC 0.95) 的强烈一致.
- 在Leave-one-subject-out交叉验证 (LOSOCV) 中获得了高精度 (0.89) 和F1得分 (0.88),优于其他指标.
- 结合SQI的SVM模型在LOSOCV.中实现了卓越的性能 (精度为0.92,F1为0.91).
- 外部验证证实了SQI的稳定性 (精度为0.87,F1为0.92) 和SVM模型的有效性 (精度为0.95,F1为0.96).
结论:
- 开发的SQI是量化PVP信号质量的可靠和有效工具,特别是其心脏组成部分.
- 这种新型SQI显示了提高血液动力学研究准确性的巨大潜力.
- 这项工作是首次尝试量化评估广泛使用的PVP波形的信号质量.
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