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Journal of Electrical Bioimpedance
Volume 11 (2020): Issue 1 (January 2020)
Open Access
In silico
and
in vitro
conductivity models of the left heart ventricle
Leonie Korn
Leonie Korn
,
Simon Lyra
Simon Lyra
,
Daniel Rüschen
Daniel Rüschen
,
Dmitry Telyshev
Dmitry Telyshev
,
Steffen Leonhardt
Steffen Leonhardt
and
Marian Walter
Marian Walter
| Aug 26, 2020
Journal of Electrical Bioimpedance
Volume 11 (2020): Issue 1 (January 2020)
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Published Online:
Aug 26, 2020
Page range:
62 - 71
Received:
May 28, 2020
DOI:
https://doi.org/10.2478/joeb-2020-0010
Keywords
VAD
,
electrical properties heart
,
heart volumetry
,
silicone conductivity
,
FEM heart
© 2020 Leonie Korn et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
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.
Fig. 2
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.
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).
Fig. 5
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.
R
00
R
01
R
10
R
11
14,9 Ω
46,97 Ω
679 Ω
995 Ω