A coaxial-slot antenna for invasive microwave hyperthermia therapy

Teng Jiao, Hua Wang, Yang Zhang, Xiao Yu, Huijun Xue, Hao Lv, Xijing Jing, Hua Zhan, Jianqi Wang

Department of Biomedical Engineering, The Fourth Military Medical University, Xi’an, China.

DOI: 10.4236/jbise.2012.54026                

Abstract

When the technique of invasive microwave hyperthermia is applied to cancer treating, the distribution of microwave thermal field and the effect of the therapy are determined by the type of microwave radiative antenna. The thermal field of biological tissue produced by microwave radiative antenna is investigated in this paper. The distribution of thermal field and specific absorption rate (SAR) of invasive coaxial-slot antenna in the frequency of 2450 MHz are obtained by the technique of finite element analysis. According to the experiment of heating the ex vivo pork liver by this kind of antenna, the result concordant with the theory is obtained. Therefore, it is suggested that this research could be a reference for clinical therapy and operation scheme.

Keywords

Microwave Hyperthermia Therapy; Antenna; Thermal Field; SAR

Conflicts of Interest

The authors declare no conflicts of interest.

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