Development of Non-invasive Multi-level PPG Measurement System and Monitoring Index for Circulatory Condition

• Main Authors: Syun-yu Jhang, 張勳宇
• Other Authors: Hsin Hsiu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/55075114085185226963

碩士 === 國立臺灣科技大學 === 醫學工程研究所 === 101 === Cardiovascular diseases occupied top factors of main death cause. Compare to cancer, cardiovascular diseases have no obvious symptoms. The aim of our research in to build a non-invasive PPG measurement system, which can detect the transmiting and reflective PPG signal simultaneously. Time(FDT, FRT, PW) and frequency-domain(amplitude ratio, harmonic variability) analysis were performed on the acquired signals. In clinical experiment, we focused on the difference between before and after exercising in healthy subjects and also subjects with metabolic syndrome. Difference in FRT, PW and harmonic index can be used to monitor the changes in the arterial elastic and blood-flow following exercise. Moreover, FDT and harmonic index can be used to discriminate subjects at different stages of metabolic syndrome. The present finding may have meanings in diagnosis of important cardiovascular diseases.