FDTD analysis on heating characteristics of antenna for minimally invasive microwave thermal therapy

摘要

In recent years various types of applications of the microwaves have been investigated and have been applied to the minimally invasive microwave thermal therapy. They are interstitial hyperthermia and microwave coagulation therapy (MCT) for thermal treatment for cancer; cardiac catheter ablation for ventricular arrhythmia treatment and so on. The authors have been studying heating characteristics of thin coaxial antenna for interstitial hyperthermia and MCT by using the FDTD (Finite Difference Time Domain) method and the FDM (Finite Difference Method). In this paper we show effectiveness of these numerical techniques for simulating the heating characteristics of the antenna inside human body.