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 Dec 1 |
| 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 |
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All Science Journal Classification (ASJC) codes
- Signal Processing
- Biomedical Engineering
- Computer Vision and Pattern Recognition
- Health Informatics
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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, 01.12.2003, p. 62-65.Research output: Contribution to journal › Conference article
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 - 2003/12/1
Y1 - 2003/12/1
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
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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
ER -