Skin Burn Evaluation under the Effects of the Dual-Phase-Lag Bio-heat Transfer

Over the years, the application of laser in medical thermal treatments has dramatically increased. One of the challenges in thermal therapies is delivering the appropriate amount of heat to the designated part of the patient s body. For the successful operation of this process, the primary restriction arises from the heat transfer requirement and the transient temperature field evolution. A major factor that characterizes the heat transfer is the tissue heterogeneity, which necessitates certain non-Fourier conduction effects to be taken into account for the accurate evaluation of tissue temperature field during thermal treatment process. Therefore, this works utilizes parabolic Pennes, hyperbolic thermal wave (TW) and different forms of the non-Fourier dual-phase-lag (DPL) models of bio-heat transfer equation with the aid of an exact analytical solution of these models for precise estimation of tissue burn induced by laser irradiation. The results show that the smaller tissue burn times are predicted by the hyperbolic TW, gradient precedence (GP) DPL, Generalized DPL, Pennes and flux precedence (FP) DPL models, respectively.