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Wearable devices that continuously monitor the physiological signals of the body allow the diagnosis and treatment of diseases, as well as the increase of physical activity effectiveness. During quantitative measurements by near infrared spectroscopy a problem arises related to indefiniteness of optical length of optical pathway. Without knowing optical length, it is impossible to obtain precise values, hence quantitative indicators will be relative concentrations of hemoglobin in terms of relative units. In this work, a comparative assessment and analysis of the results of measuring hemoglobin oxygenation using the NIRS4 device and the developed algorithm were conducted. Experiments conducted to determine the oxygenation index are described. It was found that the measured values for each hemoglobin fraction correspond to known values, and the calculation of the oxygenated hemoglobin concentration using the developed method gives changes in concentration of the same order as typical data for other methods and devices.The results of the study can be used for early diagnosis of the biochemical activity of the body. This opens new opportunities for the development of methods for diagnosing and monitoring health status based on indicators of hemoglobin concentration in the blood.
  • Key words: near infrared spectroscopy, optical tissue oximetry, tissue oxygenation, saturation
  • Published in: BIOMEDICAL ELECTRONICS
  • Bibliography link: Buyanov D. A., Shalaev P. V., Monakhova P. A., Gerasimenko A. Yu. Monitoring of hemoglobin oxygenation using the NIRS4 device and the developed algorithm. Proc. Univ. Electronics, 2024, vol. 29, no. 2, pp. 223–235. https://doi.org/10.24151/1561-5405-2024-29-2-223-235
  • Financial source: The work was carried out within the framework of the state task of the Ministry of Education and Science of the Russian Federation (project FSMR-2024-0003).
Dmitriy A. Buyanov
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1); “Medical Computer Systems” LLC (Russia, 124498, Moscow, Zelenograd, proezd 4922, 4, bld. 2)
Pavel V. Shalaev
“Aivok” LLC (Russia, 124498, Moscow, Zelenograd, proezd 4922, 4, bld. 5)
Polina A. Monakhova
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1); “Aivok” LLC (Russia, 124498, Moscow, Zelenograd, proezd 4922, 4, bld. 5)
Alexander Yu. Gerasimenko
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1); I. M. Sechenov First Moscow State Medical University of the Ministry of Healthcare of Russian Federation (Russia, 119991, Moscow, Trubetskaya st., 8

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