scholarly journals Sensitivity analysis of the complete electrode model for electrical impedance tomography

2021 ◽  
Vol 6 (7) ◽  
pp. 7333-7366
Author(s):  
Marion Darbas ◽  
◽  
Jérémy Heleine ◽  
Renier Mendoza ◽  
Arrianne Crystal Velasco ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Complete Electrode Model

JUSTIFICATION OF POINT ELECTRODE MODELS IN ELECTRICAL IMPEDANCE TOMOGRAPHY

2011 ◽  
Vol 21 (06) ◽  
pp. 1395-1413 ◽  
Author(s):  
MARTIN HANKE ◽  
BASTIAN HARRACH ◽  
NUUTTI HYVÖNEN
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Analogous Result ◽  
Real Life ◽  
Point Sources ◽  
Reconstruction Problem ◽  
Contact Impedance ◽  
Impedance Tomography ◽  
Point Electrode ◽  
Complete Electrode Model

The most accurate model for real-life electrical impedance tomography is the complete electrode model, which takes into account electrode shapes and (usually unknown) contact impedances at electrode-object interfaces. When the electrodes are small, however, it is tempting to formally replace them by point sources. This simplifies the model considerably and completely eliminates the effect of contact impedance. In this work we rigorously justify such a point electrode model for the important case of having difference measurements ("relative data") as data for the reconstruction problem. We do this by deriving the asymptotic limit of the complete model for vanishing electrode size. This is supplemented by an analogous result for the case that the distance between two adjacent electrodes also tends to zero, thus providing a physical interpretation and justification of the so-called backscattering data introduced by two of the authors.

An adjoint field approach to Fisher information-based sensitivity analysis in electrical impedance tomography

2010 ◽  
Vol 26 (12) ◽  
pp. 125008 ◽  
Author(s):  
Sven Nordebo ◽  
Richard Bayford ◽  
Bengt Bengtsson ◽  
Andreas Fhager ◽  
Mats Gustafsson ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Electrical Impedance Tomography ◽  
Fisher Information ◽  
Electrical Impedance ◽  
Impedance Tomography ◽  
Field Approach
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