Three-Dimensional Numerical Demonstrating of Blood Light Absorption across Multilayered Biological Tissues

Non-invasive blood analysis has the power to completely change how doctors identify and track illnesses. This paper deals with a novel approach to measure with accuracy the absorptivity and intensity attenuation of photon beams throughout a biological multilayer tissue. The method examined is a non-invasive method based on the diffusion equation and the resolution of the Helmholtz equation and Bear-Lambert law. A numerical model was developed to test the light absorption across diverse biological tissues while modulating and simulating blood flow behavior inside arteries. In fact, a 3-D geometric model of different skin layers and blood arteries was made using the COMSOL Multiphysics tool. The movement of different blood elements within the blood vessel is simulated using the Navier-Stokes equations since it is seen as a computational fluid dynamics problem. The spatial distribution of light fluence in biological tissues is simulated and examined using near-infrared as a source of light. To illustrate the efficiency of the proposed technique, numerical data are acquired using computational Multiphysics software.