Investigation of optical radiation penetration depth on theoretical models of inhomogeneous biological media

This paper presents theoretical calculation of the penetration depth of optical radiation into different types of biological tissue. Theoretical models of the following tissues were formed: blood, dermis, arterial vessel wall, for which the penetration depth of radiation was theoretically calculated. Experimental study of the radiation penetration depth for human biological tissues with different modification of the position of the radiation source and receiver was carried out. The obtained theoretical and experimental results can be further used for the development of effective systems for monitoring of microcirculatory-tissue systems and confirm the prospects of noninvasive spectrophotometric diagnostics application in clinical practice.