Estimation of Multi-Layer Tissue Conductivities from Non-invasively Measured Bioresistances Using Divided Electrodes
スポンサーリンク
概要
- 論文の詳細を見る
To estimate inner multi-layer tissue conductivity distribution in a cross section of the local tissue by using bioresistance data measured noninvasively on the surface of the tissue, a measurement method using divided electrodes is proposed, where a current electrode is divided into several parts. The method is evaluated by computer simulations using a three-dimension (3D) model and two two-dimension (2D) models. In this paper, conductivity distributions of the simplified (2D) model are analyzed based on a combination of a finite difference method (FDM) and a steepest descent method (SDM). Simulation results show that conductivity values for skin, fat and muscle layers can be estimated with an error less than 0.1%. Even though different strength random noise is added to measured resistance values, the conductivities are estimated with reasonable precise, e.g., the average error is about 4.25% for 10% noise. The configuration of the divided electrodes are examined in terms of dividing pattern and the size of surrounding guard electrodes to confine and control the input currents from the divided electrodes within a cross sectional area in the tissue.
- 社団法人電子情報通信学会の論文
- 2002-06-01
著者
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Kinouchi Y
Univ. Tokushima Tokushima‐shi Jpn
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ZHAO Xueli
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering
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KINOUCHI Yohsuke
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering
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IRITANI Tadamitsu
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering
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MORIMOTO Tadaoki
The authors are with the School of Medical Science, University of Tokushima
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TAKEUCHI Mieko
The authors are with the School of Medical Science, University of Tokushima
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Kinouchi Yohsuke
The Authors Are With The Department Of Electrical And Electronic Engineering Faculty Of Engineering
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Zhao Xueli
The Authors Are With The Department Of Electrical And Electronic Engineering Faculty Of Engineering
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Takeuchi Mieko
The Authors Are With The School Of Medical Science University Of Tokushima
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Morimoto Tadaoki
The Authors Are With The School Of Medical Science University Of Tokushima
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Iritani T
Univ. Tokushima Jpn
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Takeuchi M
The Author Is With The Faculty Of Engineering Takushoku University
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Zhao XL
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering, University of Tokushima
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Kinouchi Y
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering, University of Tokushima
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Iritani T
The authors are with the Department of Electrical and Electronic Engineering, Faculty of Engineering, University of Tokushima
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Morimoto T
The authors are with the School of Medical Science, University of Tokushima
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