The Contrast of Two Kinds of Microwave Antenna SAR Simulation

Abstract:

Abst r a c t. Specific Absorption Rate (SAR) represents the electromagnetic radiation sorption ability of the biological organisms. It is a hotspot issue in thermal ablation. Different antenna structure can get the different SAR in clinical treatment. This study use simulation software HFSS which based on finite element method simulate the SAR of two microwave antenna (ETW antenna and Cap-Choke microwave antenna). Obtain the curves of SAR distribution, predict the temperature field more accuracy and provide method to design microwave antenna. The ratio of the long axis and short axis of Cap-Choke antenna is about 3:2, while the ratio of ETW antenna is 4.7:1.7. So Cap-Choke antenna is suitable for the ablation of tumor, while ETW antenna can meet to the requirement of linear ablation area in atrial fibrillation ablation therapy.

• Periodical: Applied Mechanics and Materials (Volume 553)
• Pages: 379-383
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.553.379
• Online since: May 2014
• Authors: Qun Nan*, Xue Mei Guo, Fei Zhai
• Keywords: Microwave Antenna, Simulation, Specific Absorption Rate (SAR), Thermal Ablation

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