Compensation for Electrode Detachment in Electrical Impedance Tomography with Wearable Textile Electrodes

Electrical impedance tomography (EIT) is a radiation-free and noninvasive medical image reconstruction technique in which a current is injected and the reflected voltage is received through electrodes. EIT electrodes require good connection with the skin for data acquisition and image reconstruction...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-12, Vol.22 (24), p.9575
Main Authors: Hu, Chang-Lin, Lin, Zong-Yan, Hu, Shu-Yun, Cheng, I-Cheng, Huang, Chih-Hsien, Li, Yu-Hao, Li, Chien-Ju, Lin, Chii-Wann
Format: Article
Language:English
Subjects:
Algorithms
belt
compensation
Data acquisition
Datasets
detached electrode
EIT
Electric Impedance
Electric potential
Electrical impedance
Electrodes
Image acquisition
In vivo methods and tests
Lungs
Medical imaging
Methods
Skin
Software
Textiles
Tomography
Tomography - methods
Voltage
Wearable Electronic Devices
wearable textile electrode
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Description
Summary:Electrical impedance tomography (EIT) is a radiation-free and noninvasive medical image reconstruction technique in which a current is injected and the reflected voltage is received through electrodes. EIT electrodes require good connection with the skin for data acquisition and image reconstruction. However, detached electrodes are a common occurrence and cause measurement errors in EIT clinical applications. To address these issues, in this study, we proposed a method for detecting faulty electrodes using the differential voltage value of the detached electrode in an EIT system. Additionally, we proposed the voltage-replace and voltage-shift methods to compensate for invalid data from the faulty electrodes. In this study, we present the simulation, experimental, and in vivo chest results of our proposed methods to verify and evaluate the feasibility of this approach.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22249575