Investigation of thermal wave propagation within the model of biological tissue and the possibility of thermal imaging of vasomotor activity of peripheral vessels

Presently, investigation of relationships between biomechanical processes of regulation of the lumen of peripheral vessels, blood flow dynamics and changes in skin temperature with the aim of imaging of hemodynamic dysfunction is an actual problem of biomedical engineering and diagnostics. Experimental dependences of the velocity and damping of a periodic thermal perturbation in pig skin as a model of human skin have been established in this work. The solution of the heat equation in the case of periodic heating has been used to describe the propagation of thermal perturbation (heat waves) in a human skin model. Assuming proportional changes in the volume blood flow and temperature in the depth of the skin, this will allow restoring the signal of blood flow dynamics based on data of skin surface temperature variation. The latter experimentally justifies the possibility of thermal imaging of the processes of regulation of the vascular lumen of peripheral vessels during the diagnostics and therapy of vascular complications.