The ACE1 Electrical Impedance Tomography System for Thoracic Imaging

被引：1

作者：

Mellenthin, Michelle M. ^{[1
,2
]}

Mueller, Jennifer L. ^{[1
,3
,4
]}

Leon Bueno de Camargo, Erick Dario ^{[5
]}

de Moura, Fernando Silva ^{[5
]}

Rattis Santos, Talles Batista ^{[6
]}

Lima, Raul Gonzalez ^{[6
]}

Hamilton, Sarah J. ^{[7
]}

Muller, Peter A. ^{[3
,8
]}

Alsaker, Melody ^{[3
,9
]}

机构：

[1] Colorado State Univ, Sch Biomed Engn, Ft Collins, CO 80523 USA

[2] Univ Colorado, Dept Bioengn, Aurora, CO 80045 USA

[3] Colorado State Univ, Dept Math, Ft Collins, CO 80523 USA

[4] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA

[5] Fed Univ ABC, Ctr Engn Modeling & Appl Social Sci, BR-09606070 Sao Bernardo Do Campo, Brazil

[6] Univ Sao Paulo, Mech Engn Dept, BR-09210580 Sao Paulo, Brazil

[7] Marquette Univ, Dept Math Stat & Comp Sci, Milwaukee, WI 53233 USA

[8] Rowan Univ, Math Dept, Glassboro, NJ 08028 USA

[9] Gonzaga Univ, Dept Math, Spokane, WA 99258 USA

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2019年 / 68卷 / 09期

关键词：

Biomedical imaging; electrical impedance tomography (EIT); thoracic imaging; MULTIFREQUENCY EIT SYSTEM; REGIONAL LUNG VENTILATION; D-BAR METHOD; CONDUCTIVITY; IMPLEMENTATION; DESIGN; DISTINGUISHABILITY; RECONSTRUCTIONS; PERMITTIVITY; PERFORMANCE;

D O I：

10.1109/TIM.2018.2874127

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The design and performance of the active complex electrode (ACE1) electrical impedance tomography system for single-ended phasic voltage measurements are presented. The design of the hardware and calibration procedures allows 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.

引用

页码：3137 / 3150

页数：14

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