in the present paper

a quasi-stationary-state electric field model is used to establish a group of finite-element analysis functions for the radio-frequency capacitive hyperthermic system. The 2DSAR and temperature distribution patterns in the muscle tissue are calculated by using a variety of electrode diameters of two electrodes and under different phase and power relations of three electrodes. Different simulated results are obtained. The simulated results show that

the main heating field of two electrodes RF capacitive hyperthermic system is always near the smaller electrode

and the effective heating region of three electrodes RF capacitive hyperthermic system is controlable by adjusting the phase and power of three electrodes. These results are helpful for the clinical applications.