金コート感温磁性体の磁気特性を利用したワイヤレス温度計測・誘導加熱システムの研究

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2018/03/01

タイトル(英語): Study of Wireless Temperature Measurement Induction Heating System using Magnetic Properties of Au-coated Ferromagnetic Implant with Low Curie Temperature

著者名: 安藝　史崇（秋田大学大学院工学資源学研究科），Tonthat Loi（秋田大学大学院理工学研究科），齊藤　元（秋田大学大学院医学系研究科），吉村　昇（東北公益文科大学），水戸部　一孝（秋田大学大学院理工学研究科）

著者名(英語): Fumitaka Aki (Graduate School of Engineering and Resource Science, Akita University), Tonthat Loi (Graduate School of Engineering Science, Akita University), Hajime Saito (Graduate School of Medicine, Akita University), Noboru Yoshimura (Tohoku University

キーワード: ハイパーサーミア，悪性腫瘍，ワイヤレス温度計測，誘導加熱，感温磁性体　　hyperthermia，cancer，wireless temperature measurement，induction heating，ferromagnetic implant

要約(英語): In this paper, we aim to build wireless temperature measurement induction heating system for hyperthermia using “Au-coated Ferromagnetic Implant with Low Curie Temperature (Au-FILCT)”. Using this system we clarified the distance-dependent characteristic of voltage used for detecting temperature in heating process of Au-FILCT under high-frequency magnetic field applied. The tumor temperature is measurable utilizing the property in which the magnetism of Au-FILCT changes depending on its temperature. We measured the voltage and temperature of Au-FILCT, while placed at distances of 1.0, 2.0, 3.0 and 4.0 cm from the top surface of the drive coil. We confirmed that the Au-FILCT was heated above the treatable temperature of 45℃ within 145.0 seconds up to the distance of 3.0 cm and the accuracy of voltage was improved with the S/N ratio 18.3 dB at 3.0 cm. In addition, the correlation of the voltage with either the temperature or distance was high. All the contribution ratios of their approximate expressions were above 0.97. We propose a method of estimating the temperature from the voltage measured even if the distance to the Au-FILCT is unknown, assuming the core body temperature is stable at about 37℃.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.138 No.3 （2018）

本誌掲載ページ: 76-83 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/138/3/138_76/_article/-char/ja/