Two phase visualization by electrical impedance tomography with prior information

2003 ◽  
Vol 20 (4) ◽  
pp. 601-608 ◽  
Author(s):  
Min Chan Kim ◽  
Kyoung Youn Kim ◽  
Sin Kim
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Prior Information ◽  
Two Phase ◽  
Impedance Tomography ◽  
Phase Visualization

scholarly journals Detection of Outdated Structural Priors in the Discrete Cosine Transformation-based Electrical Impedance Tomography Algorithm

2021 ◽  
Vol 7 (2) ◽  
pp. 676-679
Author(s):  
Rongqing Chen ◽  
Knut Moeller
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Prior Information ◽  
Simulated Data ◽  
Treatment Decision ◽  
Simulation Models ◽  
Discrete Cosine Transformation ◽  
Impedance Tomography ◽  
Cosine Transformation ◽  
Structural Prior

Abstract Morphological prior information incorporated with the discrete cosine transformation (DCT) based electrical impedance tomography (EIT) algorithm can improve the interpretability of EIT reconstructions in clinical applications. However, an outdated structural prior can yield a misleading reconstruction compromising the accuracy of the clinical diagnosis and the appropriate treatment decision. In this contribution, we propose a redistribution index scaled between 0 and 1 to quantify the possible error in a DCT-based EIT reconstruction influenced by structural prior information. Two simulation models of different tissue atelectasis and collapsed ratios were investigated. Outdated and updated structural prior information were applied to obtain different EIT reconstructions using this simulated data, with which the redistribution index was calculated and compared. When the difference between prior and reality (the redistribution index) became larger and exceeded a threshold, this was considered as an indicator of an outdated prior information. The evaluation result shows the potential of the redistribution index to detect outdated prior information in a DCT-based EIT algorithm.

Tikhonov regularization and prior information in electrical impedance tomography

1998 ◽  
Vol 17 (2) ◽  
pp. 285-293 ◽  
Author(s):  
M. Vauhkonen ◽  
D. Vadasz ◽  
P.A. Karjalainen ◽  
E. Somersalo ◽  
J.P. Kaipio
Keyword(s):  
Electrical Impedance Tomography ◽  
Tikhonov Regularization ◽  
Electrical Impedance ◽  
Prior Information ◽  
Impedance Tomography
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