Influence of current injection pattern and electric potential measurement strategies in electrical impedance tomography

2017 ◽  
Vol 58 ◽  
pp. 276-286 ◽  
Author(s):  
Olavo Luppi Silva ◽  
Raul Gonzalez Lima ◽  
Thiago Castro Martins ◽  
Fernando Silva de Moura ◽  
Renato Seiji Tavares ◽  
...  
Keyword(s):  
Electrical Impedance Tomography ◽  
Electric Potential ◽  
Electrical Impedance ◽  
Current Injection ◽  
Impedance Tomography ◽  
Potential Measurement ◽  
Measurement Strategies

scholarly journals Improved current injection pattern for the detection of delaminations in carbon fiber reinforced polymer plates using electrical impedance tomography

2020 ◽  
pp. 147592172097230
Author(s):  
Mathias Haingartner ◽  
Sandra Gschoßmann ◽  
Max Cichocki ◽  
Martin Schagerl
Keyword(s):  
Carbon Fiber ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Current Injection ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Impedance Tomography ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

In this article, we introduce a new current injection pattern for electrical impedance tomography. The pattern improves the quality of hole detection in carbon fiber reinforced polymer plates and allows the detection of delaminations. The new pattern is described in detail and compared to three widely used, classical injection patterns. The advantages of the new pattern are demonstrated by numerical finite element analyses for three test cases: a hole of 10-mm diameter, two simultaneous holes, and an ideal delamination in a circular region with a 50-mm diameter. The results are validated experimentally by comparing electrical impedance tomography measurements of a carbon fiber reinforced polymer plate with at first one, then two holes with a 10-mm diameter using classical patterns and the new pattern.

scholarly journals Effect of the number of electrodes on the reconstructed lung shape in electrical impedance tomography

2016 ◽  
Vol 2 (1) ◽  
pp. 499-502 ◽  
Author(s):  
Benjamin Schullcke ◽  
Sabine Krueger-Ziolek ◽  
Bo Gong ◽  
Knut Moeller
Keyword(s):  
Image Quality ◽  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Regional Distribution ◽  
Current Injection ◽  
The Body ◽  
Voltage Measurement ◽  
Impedance Tomography ◽  
The Impact ◽  
Stimulation Pattern

AbstractElectrical impedance tomography (EIT) is used to monitor the regional distribution of ventilation in a transversal plane of the thorax. In this manuscript we evaluate the impact of different quantities of electrodes used for current injection and voltage measurement on the reconstructed shape of the lungs. Results indicate that the shape of reconstructed impedance changes in the body depends on the number of electrodes. In this manuscript, we demonstrate that a higher number of electrodes do not necessarily increase the image quality. For the used stimulation pattern, utilizing neighboring electrodes for current injection and voltage measurement, we conclude that the shape of the lungs is best reconstructed if 16 electrodes are used.

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