ボクセルモデル用高速多重極表面電荷法の2段階手法による体内静電誘導電界計算

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: 2020/10/01

タイトル(英語): Calculation of Electrostatically Induced Electric Fields in Human Models using a Two-step Process Method of Voxel-based Fast Multipole Surface Charge Simulation Method

著者名: 濱田　昌司（関西大学システム理工学部電気電子情報工学科）

著者名(英語): Shoji Hamada (Department of Electrical, Electronic and Information Engineering, Faculty of Engineering Science, Kansai University)

キーワード: 静電誘導電界，数値人体モデル，低周波，表面電荷法，高速多重極法，2段階手法　electrostatically induced electric field，numerical human model，low frequency，surface charge simulation method，fast multipole method，two-step process method

要約(英語): As a numerical calculation technique of the electrostatically induced electric field in the human body by the commercial frequency AC electric field, we propose a two-step process method that employs the voxel-based surface charge simulation method, combined with the fast multipole method (FMM). The validity of the proposed method was verified through analysis of the half spheroid model and the NICT TARO model and the calculation performance, such as error rate, speed, required amount of memory, and parallelization efficiency were investigated. In order to verify the performance of the FMM in this problem, we analyzed the induced fields in simple subdivision models of the TARO model with up to 1.1 billion surface elements (= the number of unknowns N) that correspond to 27.6 billion tissue voxels. The O (N) characteristics of the FMM were successfully confirmed. Therefore, the proposed method can be considered as a useful option even when dealing with large-scale voxel models that are greater than the TARO model.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.10 （2020）

本誌掲載ページ: 481-490 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/140/10/140_481/_article/-char/ja/