Design Automation of a Dynamic Thorax-Like Mesh Phantom for Evaluating the Performance of Electrical Impedance Tomography System

Wangzilu Lu; Qianyu Guo; Jiajie Huang; Yan Wu; Chao Wang; Jian Zhao; Yongfu Li

doi:10.1109/OJIM.2022.3196745

IEEE Open Journal of Instrumentation and Measurement (Jan 2022)

Design Automation of a Dynamic Thorax-Like Mesh Phantom for Evaluating the Performance of Electrical Impedance Tomography System

Wangzilu Lu,
Qianyu Guo,
Jiajie Huang,
Yan Wu,
Chao Wang,
Jian Zhao,
Yongfu Li

Affiliations

Wangzilu Lu: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Qianyu Guo: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Jiajie Huang: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Yan Wu: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Chao Wang: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Jian Zhao: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China
Yongfu Li: ORCiD; Department of Micro-Nano Electronics and MoE Key Laboratory of Artificial Intelligence, Shanghai Jiao Tong University, Shanghai, China

DOI: https://doi.org/10.1109/OJIM.2022.3196745
Journal volume & issue: Vol. 1
pp. 1 – 9

Abstract

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Phantoms are used to evaluate, calibrate, and compare the performance of electrical impedance tomography (EIT) systems. This paper presents a dynamic thorax-like mesh phantom, which mimics the changes in electrical conductivity distribution within a human thorax at different time frames. Furthermore, element merging and contour smoothing, electrode placement techniques, and PCB design automation methods are proposed to simplify, optimize the mesh phantom, and reduce the hardware implementation cost. To verify the accuracy of the mesh phantom and its PCB, SPICE simulations and experimental testings are performed to obtain the conductance of the mesh phantom and reconstruct the images through the EIDORS software. These images achieve an image correlation coefficient (ICC) of 0.680 (model versus SPICE simulation) and 0.9098 (SPICE simulation versus measurement result), respectively. This demonstrates the validity of our proposed dynamic thorax-like mesh phantom.

Published in IEEE Open Journal of Instrumentation and Measurement

ISSN: 2768-7236 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Science: Mathematics: Instruments and machines; Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=9552935

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