Determination of microphysical parameters of erythrocytes in human blood from laser radiation scattering

Abstract  We have studied the sensitivity of the correlation between the unidirectional scattering coefficients β(θ) and the microphysical parameters of erythrocytes in human blood the number concentration (N) and the volume concentration (CV), the modal radius (r), and the half-width (Δr) of the size distribution function of the erythrocytes, the real part of their refractive indices n) to variations of the latter in the ranges of their possible values at wavelengths λ = 0.3–1.2 μm. We have obtained the multiple regression equations for the microphysical parameters and β(θ) in the transparency window of blood (λ = 0.65 μm). We have shown that the procedure for determining the microphysical parameters, based on these equations, allows us to rapidly determine the microphysical parameters rapidly and highly accurately within their possible ranges.