3D Finite Element Complex Domain Numerical Models of Electric Fields in Blood and Myocardium

Chia-Ling Wei, Jonathan W. Valvano, Marc D. Feldman, Matthias Nahrendorf, John A. Pearce

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The conductance catheter system is a tool to determine left ventricular (LV) volume in vivo. However, the accuracy of this method is limited by three assumptions of the equation to convert conductance to volume: the assumed homogeneity of electric field within LV, myocardium having resistive and not capacitive properties, and assumed constant parallel myocardial conductance. This study investigates weaknesses of these three assumptions. It proposes an equivalent circuit model for mouse LV as well as a calculation method for conductance and capacitance of LV. Furthermore, this study also demonstrates the importance of phase measurement in vivo experiments.

Original languageEnglish
Pages (from-to)62-65
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume1
Publication statusPublished - 2003

Fingerprint

Phase measurement
Catheters
Equivalent circuits
Numerical models
Myocardium
Blood
Capacitance
Electric fields
Experiments

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Cite this

@article{2a92db5ac37f4f658f3fa0ddbc0fbe15,
title = "3D Finite Element Complex Domain Numerical Models of Electric Fields in Blood and Myocardium",
abstract = "The conductance catheter system is a tool to determine left ventricular (LV) volume in vivo. However, the accuracy of this method is limited by three assumptions of the equation to convert conductance to volume: the assumed homogeneity of electric field within LV, myocardium having resistive and not capacitive properties, and assumed constant parallel myocardial conductance. This study investigates weaknesses of these three assumptions. It proposes an equivalent circuit model for mouse LV as well as a calculation method for conductance and capacitance of LV. Furthermore, this study also demonstrates the importance of phase measurement in vivo experiments.",
author = "Chia-Ling Wei and Valvano, {Jonathan W.} and Feldman, {Marc D.} and Matthias Nahrendorf and Pearce, {John A.}",
year = "2003",
language = "English",
volume = "1",
pages = "62--65",
journal = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",
issn = "1557-170X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

3D Finite Element Complex Domain Numerical Models of Electric Fields in Blood and Myocardium. / Wei, Chia-Ling; Valvano, Jonathan W.; Feldman, Marc D.; Nahrendorf, Matthias; Pearce, John A.

In: Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, Vol. 1, 2003, p. 62-65.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 3D Finite Element Complex Domain Numerical Models of Electric Fields in Blood and Myocardium

AU - Wei, Chia-Ling

AU - Valvano, Jonathan W.

AU - Feldman, Marc D.

AU - Nahrendorf, Matthias

AU - Pearce, John A.

PY - 2003

Y1 - 2003

N2 - The conductance catheter system is a tool to determine left ventricular (LV) volume in vivo. However, the accuracy of this method is limited by three assumptions of the equation to convert conductance to volume: the assumed homogeneity of electric field within LV, myocardium having resistive and not capacitive properties, and assumed constant parallel myocardial conductance. This study investigates weaknesses of these three assumptions. It proposes an equivalent circuit model for mouse LV as well as a calculation method for conductance and capacitance of LV. Furthermore, this study also demonstrates the importance of phase measurement in vivo experiments.

AB - The conductance catheter system is a tool to determine left ventricular (LV) volume in vivo. However, the accuracy of this method is limited by three assumptions of the equation to convert conductance to volume: the assumed homogeneity of electric field within LV, myocardium having resistive and not capacitive properties, and assumed constant parallel myocardial conductance. This study investigates weaknesses of these three assumptions. It proposes an equivalent circuit model for mouse LV as well as a calculation method for conductance and capacitance of LV. Furthermore, this study also demonstrates the importance of phase measurement in vivo experiments.

UR - http://www.scopus.com/inward/record.url?scp=1542273221&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1542273221&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:1542273221

VL - 1

SP - 62

EP - 65

JO - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

JF - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

SN - 1557-170X

ER -