2018 年 54 巻 4 号 p. 458-466
Based on classical density functional theory (cDFT) for colloidal systems, we attempted to derive the multiple light scattering properties of whole blood. The derived formula, ODtotal=ODid+ODex, for the theoretical transmittance optical density comprised the attenuation without angular scattering part, ODid, and with angular scattering part, ODex. The former ideal part, ODid, could be represented as the simple exponential decay of the scattering and absorption coefficients of whole blood with its sample thickness, and the latter excess part, ODex, as the conventional result of radiative transfer, such as photon diffusion theory and Monte Carlo photon propagation. The applicability of the formula were demonstrated at 800, 1300nm wavelengths using human whole blood samples with varying the blood volume fraction η from 0 to 65% (n=2). Consequently, the rms errors of two-wavelength ratio, OD1300/OD800, were in the rage of 2.5-5.0 in η(%). These results suggested that the proposed cDFT method might be applicable for broader colloidal systems analysis.