[A data acquisition system for induced current electrical impedance tomography].
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.
Xiang
Haiya
H
Department of Medical Electronic Engineering, Faculty of Biomedical Engineering, Fourth Military Medical University, Xi'an, China. tohaiyan@263.net
Dong
Xiuzhen
X
Qin
Mingxin
M
You
Fusheng
F
Shi
Xuetao
X
Fu
Feng
F
Liu
Ruigang
R
Ma
Jianying
J
D000465:Algorithms; D000669:Amplifiers, Electronic; D017097:Electric Impedance; D004566:Electrodes; D055590:Electromagnetic Phenomena; D004867:Equipment Design; D008962:Models, Theoretical; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014054:Tomography / Q000379:methods*