A Low-cost CCD-based Imager for Mapping Venous Oxygenation
A low-cost imaging system is developed for mapping skin venous oxygen saturation.The system consists of a black-and-white CCD camera and cheap LED light sources working at 660nm and 800nm wavelength.With the two wavelength sources alternately illuminating the skin,the CCD camera collects images carrying signals of diffuse reflectance before and after the venous occlusion induced by a low cuff pressure.Using the Monte Carlo method,the relationship between the venous saturation value and the diffuse reflectance is determined.Therefore images captured can be converted into the venous saturation map.Experiments on human fingers and palm show that the measured data is in line with previous published data,demonstrating the effectiveness of the system on monitoring blood oxygenation in local tissues.
Jun Li Xiao Zhang
Centre for Optical and Electromagnetic Research South China Normal University,Guangzhou 510006,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
572-576
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）