Comparison of classical and conductivity zones methods for solving EIT inverse problem
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2012, Vol 0, Issue 49
Abstract
Comparison of classical iteration imagine reconstruction method and conductivity zones method properties in EIT from the point of view of calculation organization, expecting precision and computational cost of imagine receiving is carried out. Reasonably small transfer resistances sensitivity to surface conductivity changes of separate finite element is shown. Small sensitivity is appeared for finite elements, which are situated in the central part of phantom, and also for finite elements, which are situated in the phantom outline. Small sensitivity is the cause of derivative matrix bad conditionality, that is aggravated with big matrix order. It led to quantity instability by solving of inverse problem (reconstruction problem). Conductivity zones method allows to avoid some difficulties: leads to derivative matrix order reduction, increasing of sensitivity and matrix conditionality. Transfer resistances and derivatives values for uniform phantom and for phantoms with different inhomogeneities for assessment are proposed.
Authors and Affiliations
I. Sushko, A. Rybin
Keywords
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- EP ID EP309230
- DOI 10.20535/RADAP.2012.49.166-177
- Views 74
- Downloads 0
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