The comparative of the performance for predicted thermal models during microwave ablation process using a slot antenna

Abstract

Microwave (MW) ablation is a new technology for focused cancer treatment. This treatment applies the microwave power to tumor by using the MW antenna. The modeling for heat transport in the biological tissue was applied in the therapeutics application for preventing injury and analyzing the effectiveness of the treatment process. There were many heating models proposed for predicted heat transfer in the liver model. However, there were few studies comparative of the heating models in the liver cancer model. This study presented the systematically the comparative performance of the thermal model during the MW ablation process with MW power of 10 W and frequency of 2.45 GHz. The comparative thermal models implemented in this work were the bioheat model, the porous media model with constant velocity, and the Darcy-Brinkman porous model on the heat transfer in liver cancer model during MW ablation process. The mathematical models were considered to couple with electromagnetic wave propagation, heat transfer, and blood flow analysis. The Darcy-Brinkman porous model has a comparative advantage higher than the porous model with constant velocity. The Darcy-Brinkman porous model was effective in various situations of predictions as compared to other models, since the role of conduction and the role of convection were combined. The value of investigated provided an indication of limitations that must be considered in administering microwave ablation therapy.