0967-3334_35_10_2001.pdf (2.62 MB)
An instrumental electrode model for solving electrical impedance tomography forward problems
journal contribution
posted on 2023-06-08, 17:35 authored by Weida Zhang, David LiAn instrumental electrode model (IEM) capable of describing the performance of electrical impedance tomography (EIT) systems in the MHz frequency range has been proposed. Compared with the commonly used Complete Electrode Model (CEM), which assumes ideal front-end interfaces, the proposed model considers the effects of non-ideal components in the front-end circuits. This introduces an extra boundary condition in the forward model and offers a more accurate modelling for EIT systems. We have demonstrated its performance using simple geometry structures and compared the results with the CEM and full Maxwell methods. The IEM can provide a significantly more accurate approximation than the CEM in the MHz frequency range, where the full Maxwell methods are favoured over the quasi-static approximation. The improved electrode model will facilitate the future characterization and front-end design of real-world EIT systems.
Funding
Microwave breast cancer diagnosis; WZVI, Ltd.
History
Publication status
- Published
File Version
- Published version
Journal
Physiological MeasurementISSN
0967-3334Publisher
IOP PublishingExternal DOI
Issue
10Volume
35Page range
2001-2026Department affiliated with
- Engineering and Design Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2014-06-10First Open Access (FOA) Date
2014-09-22First Compliant Deposit (FCD) Date
2014-06-09Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC