Abstract
Time-resolved detection and analysis of skin backscattered optical signals (remission photoplethysmography or PPG) provide rich information on skin blood volume pulsations and can serve for reliable cardiovascular assessment. Single- and multiple-channel PPG concepts are discussed. Simultaneous data flow from several locations on the human body allows us to study heartbeat pulse-wave propagation in real time and to evaluate vascular resistance. Portable single-, dual-, and four-channel PPG monitoring devices with special software have been designed for real-time data acquisition and processing. The prototype devices have been clinically studied, and their potential for monitoring heart arrhythmias, drug-efficiency tests, steady-state cardiovascular assessment, body fitness control, and express diagnostics of the arterial occlusions has been confirmed.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Janis Spigulis, Lasma Gailite, Alexey Lihachev, and Renars Erts
Appl. Opt. 46(10) 1754-1759 (2007)
Qinghua He, Zhiyuan Sun, Yuandong Li, Wendy Wang, and Ruikang K. Wang
Biomed. Opt. Express 12(5) 2919-2937 (2021)
Jing Liu, Bryan Ping-Yen Yan, Wen-Xuan Dai, Xiao-Rong Ding, Yuan-Ting Zhang, and Ni Zhao
Biomed. Opt. Express 7(10) 4313-4326 (2016)