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

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

Journal of Electrical Bioimpedance
Volume 11 (2020): Issue 1 (January 2020)
By: Leonie Korn,  Simon Lyra,  Daniel Rüschen,  Dmitry Telyshev,  Steffen Leonhardt and  Marian Walter  
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 issue 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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