连续测量血氧饱和度的视觉方法

血氧饱和度是人体的重要生命体征指标.文章通过深入分析基于动脉血液容积脉搏波的生理活动机理,及基于容积脉搏波的血氧饱和度测量原理和方法,提出了一种基于视频的无创连续测量血氧饱和度的新方法.该方法通过混合光照射动脉血液,并采用摄像头捕获血流视频,最终根据血流容积和血液颜色的连续变化来逐拍计算出血氧饱和度.结果显示,与专业设备所测数据相比,该方法测量结果准确性高、稳定可靠.

A Novel Video Based Method for Continuous Measuring SpO2

The oxygen saturation of blood is an important vital sign. This paper proposes a new method of continuous noninvasive measurement of oxygen saturation based on blood video by extensively analyzing the physiological mechanism depending on arterial blood volumepulsewave and reviewing the principle and method of oxygen saturation measurement based on volumetric pulse wave. This method first uses mixed light to irradiate the arterial blood and captures blood stream video with mobile-phone cameras, then calculates the arterial blood oxygen content according to the blood flow volume and continuous changes in blood color. By comparing the measuring results with those from professional equipment, it shows the proposed method is with high accuracy, stable and reliable.