Signals Processing And Clinic Application On Detecting The Parameters Of Brain Blood And Oxygen With Dual Wavelengths

Based on research and anatomization of the "near infrared analytical instrument to blood and oxygen of brain" made by Center of Biomedical Engineering Wuhan University-Wuhan E-Sea Digital Techniques Co.,Ltd, the author writes the analytical software of wave about blood and oxygen of brain, power wave and correlation function and applied the software to wave analysis and clinic research on data about blood and oxygen gathered from 72 persons in center hospital of JingZhou. The research result shows:1) Saturation of brain examined from health person and anaesthesia person with near infrared analytical instrument to blood and oxygen of brain is about 80 percent, which accords with the normal physiological parameter, but average value about blood and oxygen of saturation brain checked from person who heart function not full is 72.8 percent and it is below the value from health person and anaesthesia person and the medical statistical analyses P less than 0.05,which shows the marked difference.2)The signal of wave about health person brain blood and oxygen demonstrates the wave crest of wave about blood and oxygen corresponds well with the trough and the frequency of the wave and rhythm stabilize, but as for the heart function not full, the signal of wave about brain blood and oxygen behaves the frequency and rhythm irregular, the signal between blood fluctuate and oxygen fluctuate don't correspond well. This is a hint that near infrared passing through tissue can bring the intuitionistic and changing information of brain blood and oxygen.3) Power wave main frequency apex of person who brain lack of oxygen is unclear, and power wave floor is wide, and there are many active frequency apex, and power wave of blood and oxygen don't tally well, while frequency apex of health person brain blood and oxygen is clear and there is a little main frequency apex and there exists the distinct difference.The results above prove that "near infrared analytical instrument to blood and oxygen of brain" may supervise the brain blood and oxygen harmlessly and correctly, and wave of brain blood and oxygen, power wave, correlation function examined by the instrument can become the parameters during the diagnosis on brain blood and oxygen.