Saratov State University Department of Optics & Biophotonics

1. Saratov State University Department of Optics & Biophotonics Optical properties of the human nasal polyps in the spectral range from 300 to 2500 nm Ekaterina A. Kolesnikova1, Aliya A. Muldasheva2, Julia P. Ireneva2, Darya N. Zmeeva1, Alexey N. Bashkatov1, Elina A. Genina1, Vyacheslav I. Kochubey1, Anatoly B. Knyazev2, Valery V. Tuchin11-Saratov State University, 2-Saratov State Medical University Fig.1. The geometry of the measurements in A) transmittance mode, B) reflectance mode. 1 ‑ the incident beam (diameter 1-4 mm); 2 ‑ the tissue sample; 3 ‑ the entrance port (square 2516 mm); 4 ‑ the transmitted (or diffuse reflected) radiation; 5 ‑ the integrating sphere (IS) (inner diameter is 150 mm); 6 ‑ the exit port (diameter 28 mm) Fig.2. The geometry of the collimated transmittance measurements. Diameter of the incident beam is 2 mm. The computer program package for determination of absorption and scattering tissue properties has been developed. This inverse Monte Carlo method based on the solution of direct problem by Monte Carlo simulation and minimization of the target function with the boundary condition