Study on interstitial microwave hyperthermia with multi-slot coaxial antenna

TL;DR

This paper uses finite element analysis to compare multi-slot coaxial antennas for microwave hyperthermia treatment, highlighting differences in tissue heating efficiency at 2.45 GHz.

Contribution

It introduces a novel comparative analysis of single, double, and triple-slot coaxial antennas for interstitial hyperthermia, which is not previously documented.

Findings

Triple-slot antennas provide more focused heating.

Multi-slot designs improve temperature control.

Simulation results vary with tissue type and antenna configuration.

Abstract

This study focuses attention on interstitial microwave hyperthermia, which is a popular medical procedure for treatment of pathological human tissues containing tumors. In the paper, the 2D finite element analysis is used to compare the models of the coaxial antenna with one, two and three air slots. The implemented models are based on the wave equation in the TM mode coupled with the Pennes equation under a transient state condition. Moreover, the model takes into account the thermo-electrical properties of human tissue for the antenna operating frequency of 2.45 GHz. Simulation results for different tissues and various multi-slot antenna configurations have been presented. The comparative analysis for single-, double-and triple-slot coaxial antennas shown in this article does not have equivalents in the current literature in the field of hyperthermia.