The chapter analyzed the main methods of solving the fundamental equation of radiative transfer theory in optical biomedical diagnostics problems. Conditions of these use depending on the type of biological tissues are described. The phase functions of single scattering, which describe the propagation of optical radiation in different types of biological tissues, were considered and systematized in the methods and tools of biophotonics with the possibilities of spatial-oriented analysis of radiation scattered by sample of biological media, organs, and body parts. As a result, the method of photometric analysis of biological media by expanding the space of definition of their optical properties was developed. That made it possible to simultaneously consider the optical radiation’s characteristics, reflected and transmitted by biological tissues, within the total solid angle. The methods of implementing the mathematical basis of spatial photometry of biological tissue by determining the scattering intensity along parallels (circular bands) and meridians (sections) were developed. The mechanism of the transition from experimentally determined indicatrix of scattering of thick sample to the anisotropy factor of single scattering by designed methods is proposed. The proposed scheme-technical versions of the information-measurement system for spatial photometry. The scattering indicators of laser radiation were analyzed by thick samples of muscle tissues at different wavelengths and with different placements of fibers. A transition was made from the scattering indicator by thick samples to the anisotropy factor of single scattering. The identity of the experimentally determined values of the optical coefficients of diffuse reflection and total transmittance and those determined from the results of Monte Carlo simulations using the averaged value of the anisotropy factor of single scattering over the intersections is proved.


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    Title :

    Biological Tissues Axial Anisotropy Spatial Photometry


    Additional title:

    Studies in Systems, Decision and Control




    Publication date :

    2023-11-14


    Size :

    38 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





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