Compensation for Electrode Detachment in Electrical Impedance Tomography with Wearable Textile Electrodes
Journal
Sensors
Journal Volume
22
Journal Issue
24
Start Page
9575
ISSN
14248220
Date Issued
2022-12
Author(s)
Hu, Chang-Lin
Lin, Zong-Yan
Hu, Shu-Yun
Cheng, I-Cheng
Huang, Chih-Hsien
Li, Yu-Hao
Li, Chien-Ju
Abstract
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.
Subjects
belt
compensation
detached electrode
EIT
wearable textile electrode
Publisher
MDPI
Type
journal article