The model for determining oxygen saturation of biological tissues with the help of an optoacoustic method

The work is devoted to modeling of optoacoustic signals from erythrocytes taking into account oxygen saturation for laser radiation with a wavelength of 700 nm. The spatial organization of tissues, disjoint randomly distributed mixtures of oxygenated and dysoxygenated erythrocytes in two-dimensional space is modeled. A theoretical model for studying the effect of SO2 on optoacoustic signals is presented. For this, mixtures of oxygenated and dysoxygenated erythrocytes were considered. The received signal from erythrocytes was calculated using the principle of linear superposition for signals emitted by individual red blood cells. It was observed that the amplitude of the optoacoustic signal increased with decreasing SO2 for optical radiation of 700 nm.