基于摄像头的地震心电图用于监测心率变化
IEEE journal of biomedical and health informatics
|February 27, 2024
概括
激光光斑成像提供了一种强大的非接触方法,用于使用地震心电图 (SCG) 信号测量心率变化 (HRV). 这种技术与心电图 (ECG) 相比,与光电图 (PPG) 相比,显示出更高的一致性,甚至通过衣服工作.
科学领域:
- 生物医学光学 生物医学光学
- 生理监测是指对身体进行生理监测.
- 心血管诊断心血管诊断
背景情况:
- 心率变化 (HRV) 反映了自主神经系统 (ANS) 功能,对心血管健康至关重要.
- 传统的HRV监测通常依赖于基于接触的传感器,如心电图 (ECG) 和光电图 (PPG).
- 对于提高患者舒适度和持续监测,HRV评估的非接触方法是可取的.
研究的目的:
- 开发和评估一种用于失焦斑点成像的光学模型,以测量地震心电图 (SCG) 的非接触信号.
- 为了比较基于斑点的SCG信号与ECG和PPG信号的HRV参数的准确性.
- 为了评估基于斑点的SCG方法在服装阻塞下的稳定性.
主要方法:
- 提出了一种用于失焦斑点成像的光学模型,以捕捉SCG的外平面运动.
- 获取了激光光斑视频,并同时记录了心电图和PPG信号.
- 分析了SCG,PPG和ECG信号的HRV参数,使用已确立的指标.
- 评估信号性能与或没有服装阻塞.
主要成果:
- 与PPG信号相比,基于斑点的SCG信号与ECG衍生的HRV参数的一致性更高.
- 即使测量地点被衣物覆盖,SCG方法在评估HRV方面也保持了有效性.
- 失焦的斑点成像成功捕获了灵敏的SCG测量的运动.
结论:
- 基于相机的非接触式SCG使用激光光斑成像是监测HRV的强大而可靠的方法.
- 这种技术为用于心血管健康评估的传统PPG传感器提供了一个有希望的非接触式替代方案.
- 通过服装进行测量的能力提高了广泛的临床和远程患者监测应用的潜力.
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