An improved simulation model of photon propagation in scattering biological tissue has been developed based on the Monte Carlo method, which makes it possible to comprehensively consider all the main optical processes occurring during the propagation of optical radiation through the BT. The model differs from the known ones in that it allows one to consider the polarization state of the incident radiation and the change in its optical characteristics by tracking the electric field in each interaction event. Based on the developed statistical model, simulation modeling of the processes of photon propagation in the skin and its individual layers was carried out, which made it possible to establish the scattering and transmission characteristics for each of the skin layers with model parameters considering the angles of incidence of radiation in the visible and near-IR ranges, and the thickness of the skin layers. The simulation also made it possible to determine the relative intensity of backscattered photons depending on localization.
The perspective of using the photoplethysmographic method for evaluating microcirculatory changes in tissue microcirculation to study the processes that occur during photon physiotherapeutic influence in the maxillofacial region is considered. Also, this research method is relevant for determining microcirculation disorders in patients with various degrees of severity of field injuries. 2. Photon radiation has been shown to increase the elasticity of blood vessel walls, elasticity of erythrocytes, oxygen transport function of blood, activity of cell membranes, acceleration of tissue regeneration processes, reduction of lipid oxidation, normalization of blood rheological parameters, stimulation of ATP formation in mitochondria, which increases the bioenergetic potential of cells.
This article illustrates the method and system of polarization mapping of two-dimensional length distributions of individual Mueller-matrix images of biological layers, which are azimuthally independent with respect to the direction of their laser irradiation. The intellectual analysis of the named distributions involves the determination of their informative features as statistical and correlation moments of the 1st to 4th order, according to which their further classification is implemented on the basis of binomial logistic regression. The improved system with expanded functionality allowed to obtain an assessment of the reliability of the diagnosis of the pathology of the cervix at the level of 90% to 97.8%.
This paper presents an improved method and system for Mueller matrix polarization diagnostics of optically thin biological films, in which azimuthally independent components of Mueller matrix images (MMIs) of biological samples and invariant superpositions of other MMIs are analyzed. Multiparametric analysis of these invariant MMIs and invariant superpositions of MMIs involves calculating their statistical, correlation and spectral moments of 1st - 4th order, which form informative parameters for making diagnosis decisions in the system. New fuzzy logic models of decision rules for making diagnostic decisions in the system in the study of cervical biological sections were developed. The developed system allows to increase the diagnostic reliability of biological layers up to 98%.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.