Numerical and Experimental Studies on Heating Characteristics of an RF Rectangular Resonant Cavity Applicator for Hyperthermic Treatment of Deep-seated Tumors Using a Human Model Equipped with Conductive Caps

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概要

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• We numerically and experimentally investigated the heating characteristics of an RF rectangular resonant cavity applicator for the hyperthermic treatment of deep-seated tumors. First, Maxwell's equations and heat-transfer equations were solved for a dielectric phantom without blood flow. Conductive caps were attached to the dielectric phantom to shield the nontumor regions from the electromagnetic field. Several experiments were carried out on the basis of the simulation results. The results showed that it is possible to heat deep-seated tumors. For a real-life application, a simple human model with organs and blood flow, equipped with the caps. Was modeled and solved numerically. It was found that the tumor region was heated to a comparatively higher temperature as that of the normal cells. Therefore, the rectangular resonant cavity applicator with the caps can potentially be used for heating deep-seated tumors.数値解析と加温実験により, 深部癌温熱治療用立体空洞共振器の加温特性を検討した. まず初めに, 数値解析により, マックスウェルの方程式と熱伝導－熱伝達方程式を解き, 血流の無い誘電体ファントムの加温分布を求めた. 誘電体ファントムには, 電磁波から非加温部を保護するために, 導体キャップを装着した. 以上の数値解析を踏まえ, 加温実験を行ったところ, 深部癌の加温の可能性を示した. 次に, 実際に近いケースとして, 人体器官と血流を模し, 導体キャップを装着した簡易人体モデルを作成して, 数値解析を行った. その結果, 正常組織と比較して, 腫瘍部がより高温になることが分かった. したがって, 導体キャップを用いた本加温システムは, 深部癌の治療が出来ると考える

• 日本ハイパーサーミア学会の論文
• 2008-06-20

著者

• TANGE YUTAKA

  Department of Electrical and Computer Engineering, Maizuru National College of Technology

• KANAI YASUSHI

  Department of Information and Electronics Engineering, Niigata Institute of Technology

• SAITOH YOSHIAKI

  Niigata College of Technology

• KANAI Yasushi

  Department of Clinical Pharmacology, Suntory Institute for Biomedical Research

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• Numerical and Experimental Studies on Heating Characteristics of an RF Rectangular Resonant Cavity Applicator for Hyperthermic Treatment of Deep-seated Tumors Using a Human Model Equipped with Conductive Caps

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