Features of signal absorption fronts of laser radiation in rapid diagnosis of human health
M A Yakusheva, Roman Davydov, Daria D. Isakova
Abstract
The need to find new solutions to extend the functionality of pulse oximetry using the laser absorption signal has been substantiated. Research has been carried out to identify areas that will enhance the functionality of pulse oximetry using the absorption signal. Factors have been identified that will increase the recorded absorption signal-to-noise ratio. A high level of the signal-to-noise ratio of the recorded absorption signal is required to study the rise and fall fronts of the pulse waveform, as well as the region of its central peak. New techniques have been proposed for treating these fronts, which consist of many steps of different duration and amplitude. A high signal-to-noise ratio (more than 15) allows the photodetector to obtain the maximum resolution of these steps. The results of real-time human condition studies are presented. The data obtained together with classic human health criteria (pulse and blood oxygen content) make it possible to establish the human condition more reliably and identify some diseases.