Numerical analysis of dual-phase lag effects on thermal response during focused ultrasound

Abstract

The effectiveness of a hyperthermia-induced treatment depends on correct prediction of the tissue response to the thermal load. The bioheat transfer equation modified by dual time delays (DPL), is one of the models used to determine the temperature profile within the tissue. The DPL time delays are crucial for accurately estimating the temperature field in the target tissue. In the present work, heat is generated using the FU technique. After that, it is looked at how time delays affect the temperature distribution at the focal point inside the cancerous tissue. The results showed that the focal point's temperature distribution significantly depends on $\tau_{q}$ and $\tau_{T}$. In the same line, with the increase of both parameters, the maximum temperature tends to have a lower value. Finally, the results show that the temperature distribution has stronger dependence on $\tau_{T}$ compared to $\tau_{q}$. Results of the study can be used for an effective planning of thermal treatment.