The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
조직 표면에서 비침습적으로 측정된 생체 저항 데이터를 이용하여 국소 조직 단면의 내부 다층 조직 전도도 분포를 추정하기 위해 전류 전극을 여러 부분으로 분할하는 분할 전극을 이용한 측정 방법이 제안됩니다. 이 방법은 3차원(2D) 모델과 2개의 0.1차원(4.25D) 모델을 사용하는 컴퓨터 시뮬레이션으로 평가됩니다. 본 논문에서는 FDM(Finite Difference Method)과 SDM(Sepest Descent Method)을 결합하여 단순화된(10D) 모델의 전도도 분포를 분석합니다. 시뮬레이션 결과는 피부, 지방 및 근육층의 전도도 값을 XNUMX% 미만의 오차로 추정할 수 있음을 보여줍니다. 측정된 저항값에 서로 다른 강도의 무작위 노이즈가 추가되더라도 전도도는 합리적으로 정확하게 추정됩니다. 예를 들어 노이즈 XNUMX%에 대한 평균 오류는 약 XNUMX%입니다. 분할 전극의 구성을 분할 패턴과 주변 가드 전극의 크기 측면에서 조사하여 분할 전극으로부터의 입력 전류를 조직 내 단면적 내에 가두어 제어합니다.
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Xueli ZHAO, Yohsuke KINOUCHI, Tadamitsu IRITANI, Tadaoki MORIMOTO, Mieko TAKEUCHI, "Estimation of Multi-Layer Tissue Conductivities from Non-invasively Measured Bioresistances Using Divided Electrodes" in IEICE TRANSACTIONS on Information,
vol. E85-D, no. 6, pp. 1031-1038, June 2002, doi: .
Abstract: 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.
URL: https://global.ieice.org/en_transactions/information/10.1587/e85-d_6_1031/_p
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@ARTICLE{e85-d_6_1031,
author={Xueli ZHAO, Yohsuke KINOUCHI, Tadamitsu IRITANI, Tadaoki MORIMOTO, Mieko TAKEUCHI, },
journal={IEICE TRANSACTIONS on Information},
title={Estimation of Multi-Layer Tissue Conductivities from Non-invasively Measured Bioresistances Using Divided Electrodes},
year={2002},
volume={E85-D},
number={6},
pages={1031-1038},
abstract={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.},
keywords={},
doi={},
ISSN={},
month={June},}
부
TY - JOUR
TI - Estimation of Multi-Layer Tissue Conductivities from Non-invasively Measured Bioresistances Using Divided Electrodes
T2 - IEICE TRANSACTIONS on Information
SP - 1031
EP - 1038
AU - Xueli ZHAO
AU - Yohsuke KINOUCHI
AU - Tadamitsu IRITANI
AU - Tadaoki MORIMOTO
AU - Mieko TAKEUCHI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E85-D
IS - 6
JA - IEICE TRANSACTIONS on Information
Y1 - June 2002
AB - 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.
ER -