Accuracy Estimation of Induced Electric Field Calculated by Fast-Multipole Surface-Charge-Simulation Method for Voxel Data
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- Hamada Shoji
- Kyoto University
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- Kitano Mitsuhiro
- Kyoto University
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- Kobayashi Tetsuo
- Kyoto University
Bibliographic Information
- Other Title
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- 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
- 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
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Abstract
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.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 128 (4), 223-234, 2008
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679571134208
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- NII Article ID
- 10021129629
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 9451864
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed