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

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

Department of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Pages (from-to)	62-65
Number of pages	4
Journal	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	1
Publication status	Published - 2003
Event	A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico Duration: 2003 Sep 17 → 2003 Sep 21

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 = "Wei, {Chia Ling} and Valvano, {Jonathan W.} and Feldman, {Marc D.} and Matthias Nahrendorf and Pearce, {John A.}",

note = "Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society ; Conference date: 17-09-2003 Through 21-09-2003",

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 journal › Conference article › peer-review

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 - Conference 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

T2 - A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Y2 - 17 September 2003 through 21 September 2003

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this