| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Previous studies have suggested that measurement of photoplethysmography in a daily life is possible by green light. However, measurement of pulse wave by green light is a technique enabled by recent remarkable improvement of optical device technology, and basic examination is still inadequate compared to the near-infrared light of the conventional method. As a result of examining the accuracy of the pulse wave velocity measurement using green light, It was the similar accuracy as measurement method using electrocardiogram and infrared PPG signal. Furthermore, we examined the effect of PTT detecting method on precision of computing PTT. The coefficient of variation of a ten-seconds PTT computed from each detecting method, and it was used to evaluate the precision of detecting method. The result shows that pumping phase had higher precision than reflected phase.
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