| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Outline of Final Research Achievements |
To visualize the plethysmographic signals remotely, we investigated a method that is specifically developed for estimating the concentrations of oxygenated blood, deoxygenated blood, and total blood in skin tissue from RGB digital color images. The plethysmographic signals were extracted from the time course of total blood concentration by FFT band pass filter. Heart rate (HR), pulse wave amplitude (PWA), and arterial oxygen saturation were calculated from the extracted plethysmographic signals. In vivo imaging of rat skin flap during varying fraction of inspired oxygen demonstrated the possibility of the method to evaluate arterial oxygen saturation. In vivo experiments were performed for human subjects during rest and after knee bends exercise. We confirmed that the ability of the method to evaluate the blood volume pulse and oxygen saturation simultaneously.
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