Verkruysse Wim, Svaasand Lars O, Nelson J Stuart
Beckman Laser Institue, University of California, Irvine, 1002 Health Sciences Rd. East, Irvine, CA 92612, USA.
Opt Express. 2008 Dec 22;16(26):21434-45. doi: 10.1364/oe.16.021434.
Plethysmographic signals were measured remotely (> 1m) using ambient light and a simple consumer level digital camera in movie mode. Heart and respiration rates could be quantified up to several harmonics. Although the green channel featuring the strongest plethysmographic signal, corresponding to an absorption peak by (oxy-) hemoglobin, the red and blue channels also contained plethysmographic information. The results show that ambient light photo-plethysmography may be useful for medical purposes such as characterization of vascular skin lesions (e.g., port wine stains) and remote sensing of vital signs (e.g., heart and respiration rates) for triage or sports purposes.
使用环境光和处于电影模式的简单消费级数码相机在远程（>1米）测量体积描记信号。心率和呼吸率可量化至多个谐波。尽管绿色通道呈现最强的体积描记信号，对应于（氧合）血红蛋白的吸收峰，但红色和蓝色通道也包含体积描记信息。结果表明，环境光光电容积描记术可能对医学用途有用，例如表征血管性皮肤病变（如葡萄酒色斑）以及用于分诊或运动目的的生命体征（如心率和呼吸率）的遥感监测。
