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In silico and in vitro conductivity models of the left heart ventricle

Journal of Electrical Bioimpedance
Volume 11 (2020): Issue 1 (January 2020)
By:
Open Access
|Aug 2020

Figures & Tables

Fig. 1

a) CAD model with the inner wax-/ polyvinylalcohol-core; b) 3D-printed casting molds from polylactide; c) Resulting insulating ventricle from silicone; d) Resulting conductive ventricle from silicone and carbon.
a) CAD model with the inner wax-/ polyvinylalcohol-core; b) 3D-printed casting molds from polylactide; c) Resulting insulating ventricle from silicone; d) Resulting conductive ventricle from silicone and carbon.

Fig. 2

Schematic overview of the modular layout of the impedance measurement unit.
Schematic overview of the modular layout of the impedance measurement unit.

Fig. 3

Left: In silico FE model similar to the in vitro model from CAD files; middle: Mesh view of the FE model; right: Close-up of the ventricle's longitudinal cross-section with the ten-electrode catheter.
Left: In silico FE model similar to the in vitro model from CAD files; middle: Mesh view of the FE model; right: Close-up of the ventricle's longitudinal cross-section with the ten-electrode catheter.

Fig. 4

Left: Measured impedances in the conductive (red) and insulating silicone ventricle (blue) impedance; right: Simulated impedances in the conductive (red) and insulating ventricle (blue).
Left: Measured impedances in the conductive (red) and insulating silicone ventricle (blue) impedance; right: Simulated impedances in the conductive (red) and insulating ventricle (blue).

Fig. 5

Close-up of the current paths in the ventricle with insulating properties (left) and conductive properties (right).
Close-up of the current paths in the ventricle with insulating properties (left) and conductive properties (right).

Calibration network consisting of four resistances used for the AFE4300_

R00R01R10R11
14,9 Ω46,97 Ω679 Ω995 Ω
DOI: https://doi.org/10.2478/joeb-2020-0010 | Journal eISSN: 1891-5469
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Language: English
Page range: 62 - 71
Submitted on: May 28, 2020
Published on: Aug 26, 2020
Published by: University of Oslo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year
Keywords:
VAD,
electrical properties heart,
heart volumetry,
silicone conductivity,
FEM heart
Related subjects:
Engineering,
Bioengineering and biomedical engineering,
Biomedical electronics,
Life sciences,
Biophysics,
Medicine,
Biomedical engineering,
Physics,
Spectroscopy and metrology

© 2020 Leonie Korn, Simon Lyra, Daniel Rüschen, Dmitry Telyshev, Steffen Leonhardt, Marian Walter, published by University of Oslo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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