The ACE1 Electrical Impedance Tomography System for Thoracic Imaging

Overview

Journal IEEE Trans Instrum Meas

Date 2020 Nov 23

PMID 33223563

Citations 16

Authors

Michelle M Mellenthin

Jennifer L Mueller

Erick Dario Leon Bueno de Camargo

Fernando Silva de Moura

Talles Batista Rattis Santos

Raul Gonzalez Lima

Sarah J Hamilton

Peter A Muller

Melody Alsaker

Affiliations

Soon will be listed here.

Abstract

The design and performance of the ACE1 (Active Complex Electrode) electrical impedance tomography system for single-ended phasic voltage measurements is presented. The design of the hardware and calibration procedures allow for reconstruction of conductivity and permittivity images. Phase measurement is achieved with the ACE1 active electrode circuit which measures the amplitude and phase of the voltage and the applied current at the location at which current is injected into the body. An evaluation of the system performance under typical operating conditions includes details of demodulation and calibration and an in-depth look at insightful metrics, such as signal-to-noise ratio variations during a single current pattern. Static and dynamic images of conductivity and permittivity are presented from ACE1 data collected on tank phantoms and human subjects to illustrate the system's utility.

Citing Articles

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