A parametric model for the changes in the complex valued conductivity of a lung during tidal breathing
Article
Nordebo, S., Dalarsson, M., Khodadad, D., Müller, B., Waldmann, A., Becher, T., Frerichs, I., Sophocleous, L., Sjöberg, D., Seifnaraghi, N. and Bayford, R. 2018. A parametric model for the changes in the complex valued conductivity of a lung during tidal breathing. Journal of Physics D: Applied Physics. 51 (20). https://doi.org/10.1088/1361-6463/aabc04
Type | Article |
---|---|
Title | A parametric model for the changes in the complex valued conductivity of a lung during tidal breathing |
Authors | Nordebo, S., Dalarsson, M., Khodadad, D., Müller, B., Waldmann, A., Becher, T., Frerichs, I., Sophocleous, L., Sjöberg, D., Seifnaraghi, N. and Bayford, R. |
Abstract | Classical homogenization theory based on the Hashin-Shtrikman coated ellipsoids is used to model the changes in the complex valued conductivity (or admittivity) of a lung during tidal breathing. Here, the lung is modeled as a two-phase composite material where the alveolar air-filling corresponds to the inclusion phase. The theory predicts a linear relationship between the real and the imaginary parts of the change in the complex valued conductivity of a lung during tidal breathing, and where the loss cotangent of the change is approximately the same as of the effective background conductivity and hence easy to estimate. The theory is illustrated with numerical examples, as well as by using reconstructed Electrical Impedance Tomography (EIT) images based on clinical data from an ongoing study within the EU-funded CRADL project. The theory may be potentially useful for improving the imaging algorithms and clinical evaluations in connection with lung EIT for respiratory management and monitoring in neonatal intensive care units. |
Research Group | Biophysics and Bioengineering group |
Publisher | IOP Publishing |
Journal | Journal of Physics D: Applied Physics |
ISSN | 0022-3727 |
Publication dates | |
Online | 25 Apr 2018 |
23 May 2018 | |
Publication process dates | |
Deposited | 22 May 2018 |
Accepted | 05 Apr 2018 |
Output status | Published |
Accepted author manuscript | |
Copyright Statement | © 2018 IOP Publishing Ltd. |
Additional information | Article number = 205401 |
Digital Object Identifier (DOI) | https://doi.org/10.1088/1361-6463/aabc04 |
Language | English |
https://repository.mdx.ac.uk/item/87q79
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