ボクセルデータ用高速多重極表面電荷法の誘導電界計算精度の評価

• 濱田 昌司

  京都大学

• 北野 允大

  京都大学

• 小林 哲生

  京都大学

書誌事項

タイトル別名

• Accuracy Estimation of Induced Electric Field Calculated by Fast-Multipole Surface-Charge-Simulation Method for Voxel Data
• ボクセル データヨウ コウソク タジュウキョク ヒョウメン デンカホウ ノ ユウドウ デンカイ ケイサン セイド ノ ヒョウカ

抄録

This paper describes an accuracy estimation of low frequency electric fields induced in a human head model calculated by the FMM-SCM-V (fast-multipole surface-charge-simulation method for voxel data) by comparing them with the true fields calculated by the EMMM-PT (equivalent multipole moment method with polar-coordinates translations). The head model is composed of seven spheres and the spheres are composed of cubic voxels having 2, 1, 0.5, or 0.34mm side length. A square-coil current (1A, 50Hz) induces eddy field in the model. The number of voxels, the number of elements, and calculation time were 106,575,801, 4,936,874, and 82 minutes, respectively, when 0.34mm size voxel model was analyzed. In this case, the maximum value and the standard deviation of the electric field error vector in gray matter region were less than 19% and 0.89% , respectively. In addition, they were less than 2.9% and 0.33%, respectively, when we intended to estimate spatially averaged field strength in a (0.34x11)³ mm³ volume region.

収録刊行物

• 電気学会論文誌．　Ａ

  電気学会論文誌．　Ａ 128 (4), 223-234, 2008

  一般社団法人 電気学会

キーワード

• 高速多重極法
• 表面電荷法
• ボクセル
• 等価多重極モーメント法
• 誘導電界

詳細情報

• CRID: 1390282679571134208
• NII論文ID: 10021129629
• NII書誌ID: AN10136312
• DOI: 10.1541/ieejfms.128.223
• ISSN: 13475533
• ISSN: 03854205
• NDL書誌ID: 9451864
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9451864
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/128/4/128_4_223/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可