A Theoretical Study about Parameter Estimation of Space Distributed Local Tissue Impedance

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  • Yasuno Emiko
    Department of Systems and Control Engineering, Anan National College of Technology
  • Zhao Xueli
    Department of Electrical and Electronic Engineering, Faculty of Engineering, The University of Tokushima
  • Kinouchi Yohsuke
    Department of Electrical and Electronic Engineering, Faculty of Engineering, The University of Tokushima
  • Morimoto Tadaoki
    School of Health Sciences, The University of Tokushima

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Other Title
  • 空間分布する局所組織インピーダンスのパラメータ推定に関する理論的検討
  • クウカン ブンプ スル キョクショ ソシキ インピーダンス ノ パラメータ スイテイ ニ カンスル リロンテキ ケントウ

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In this paper, a new configuration of the electrodes, called divided electrode, is proposed for a short time measurement of bio-impedance in a cross section of a local tissue. Its capability is examined by computer simulations, where a distributed equivalent circuit is used as a model of the tissue. Estimation of impedance parameters is carried out by use of the Gauss-Newton Method. As a result of them, usefulness of the proposed method is confirmed by computer simulations using a typical layered tissue model.

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