蒙特卡洛模拟黑色素度对反射脉冲氧计中的光组织相互作用的影响
Raghda Al-Halawani1, Meha Qassem1, Panicos A Kyriacou1
1Research Centre for Biomedical Engineering, City St George's, University of London, London, EC1V 0HB, UK.
Sensors (Basel, Switzerland)
|January 25, 2025
概括
使用反射脉冲氧计的消费者可穿戴设备对SpO2测量具有不同的准确性,特别是在较深的皮肤色调中. 单一的校准方法是不够的,强调了对各种用户改进算法的需要.
科学领域:
- 生物医学工程 生物医学工程
- 生理测量生理测量
- 可穿戴技术可穿戴技术
背景情况:
- 越来越多的消费者对可穿戴设备的需求,以实时监控健康和健身指标.
- 可穿戴设备中的反射脉冲氧计提供了方便的SpO2监测,但面临着准确性挑战.
- 皮肤色素可以干扰生理信号捕获,影响SpO2测量可靠性.
研究的目的:
- 研究皮肤色素对消费者可穿戴设备中的SpO2精度的影响.
- 评估不同肤色的反射脉冲氧计的可靠性.
- 评估当前校准方法对不同人群的适用性.
主要方法:
- 开发了一种蒙特卡洛模型来模拟反射脉冲氧度.
- 评估模拟的SpO2测量在轻,中等和深色皮肤类型.
- 将结果与传导度校准算法进行比较,以评估准确性.
主要成果:
- 在不同类型的皮肤中观察到SpO2测量精度的显著差异.
- 根平均平方误差 (RMSE) 的0.3956% (轻),0.9132% (中等),和8.4111% (黑暗) 的皮肤被发现.
- 表明一个"一个算法适合所有"的方法对于准确的SpO2读数是不够的.
结论:
- 皮肤颜色显著影响消费者可穿戴的SpO2测量的准确性.
- 目前的反射脉冲氧度校准方法需要针对不同肤色进行细化.
- 进一步的研究是必要的,以提高可穿戴的SpO2性能在现实世界的应用.
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