A data acquisition system for induced current electrical impedance tomography.
- Author:
Haiya XIANG
1
;
Xiuzhen DONG
;
Mingxin QIN
;
Fusheng YOU
;
Xuetao SHI
;
Feng FU
;
Ruigang LIU
;
Jianying MA
Author Information
1. Department of Medical Electronic Engineering, Faculty of Biomedical Engineering, Fourth Military Medical University, Xi'an, China. tohaiyan@263.net
- Publication Type:Journal Article
- MeSH:
Algorithms;
Amplifiers, Electronic;
Electric Impedance;
Electrodes;
Electromagnetic Phenomena;
Equipment Design;
Models, Theoretical;
Signal Processing, Computer-Assisted;
instrumentation;
Tomography;
methods
- From:
Journal of Biomedical Engineering
2005;22(4):819-823
- CountryChina
- Language:Chinese
-
Abstract:
Induced current electrical impedance tomography (ICEIT) is a new branch of electrical impedance tomography (EIT). We have designed and set up a high accuracy ICEIT hardware system with 32 electrodes based on physical phantom, and we have brought forward a new method to reduce the additive electromotive force (EMF) in circuit of the electrode leads. By use of the technique of twisted pair wire, the additive EMF in the circuit of the electrode leads has been reduced to 10% of that before use and the precision of the system has been improved. The precision of the final results is better than 0.5% after 1000 measurement data averaged. Applying the reconstructive algorithm, we have obtained preliminary images based on physical phantom.
