感温磁性体を利用したハイパーサーミアのための低侵襲温度計測技術の精度向上に関する検討

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: 2014/07/01

タイトル(英語): Accuracy Improvement of Low-invasive Temperature Measurement for Hyperthermia Treatment using a Ferromagnetic Implant with Low Curie Temperature

著者名: 宮本　隆平（秋田大学大学院工学資源学研究科電気電子工学専攻），齊藤　元（秋田大学大学院医学系研究科），鈴木　雅史（秋田大学大学院工学資源学研究科電気電子工学専攻），吉村　昇（秋田大学大学院工学資源学研究科電気電子工学専攻），水戸部　一孝（秋田大学大学院工学資源学研究科情報工学専攻）

著者名(英語): Ryuhei Miyamoto (Department of Electrical and Electronic Engineering, Graduate School of Engineering and Resource Science, Akita University), Hajime Saito (Graduate School of Medicine and Faculty of Medicine, Akita University), Masafumi Suzuki (Department of Electrical and Electronic Engineering, Graduate School of Engineering and Resource Science, Akita University), Noboru Yoshimura (Department of Electrical and Electronic Engineering, Graduate School of Engineering and Resource Science, Akita University), Kazutaka Mitobe (Department of Compute Science and Engineering, Graduate School of Engineering and Resource Science, Akita University)

キーワード: ハイパーサーミア，低侵襲，ワイヤレス温度計測，バイアス低減　　hyperthermia，low-invasive，wireless temperature measurement，bias reduction

要約(英語): We investigated a treatment method for hyperthermia in which a ferromagnetic implant with a low curie temperature (FILCT) is implanted into a malignant tumor and then a high-frequency magnetic field is applied outside the body. In earlier studies, we confirmed that the target temperature of the tumor can be non-invasively monitored by detecting changes in the magnetic field caused by magnetic permeability changes. It was very difficult, however, to detect FILCT temperature if the applied magnetic field was in an unstable state. Additionally, if the initial bias is higher, it becomes more difficult to detect FILCT temperature because the resolution of the lock-in amplifier is reduced. To improve the accuracy of low-invasive temperature measurement, we formulated a method that reduces the drift in the pickup coil voltage caused by instability from the applied magnetic field. In addition, we experimentally confirmed that the influence from fluctuation in the applied magnetic field can be reduced by adjusting the initial bias value near 0 V.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.7 （2014）

本誌掲載ページ: 436-441 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/134/7/134_436/_article/-char/ja/