[A data acquisition system for induced current electrical impedance tomography]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2005 Aug;22(4):819-23.
[Article in 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.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Amplifiers, Electronic
  • Electric Impedance*
  • Electrodes
  • Electromagnetic Phenomena*
  • Equipment Design
  • Models, Theoretical*
  • Signal Processing, Computer-Assisted / instrumentation*
  • Tomography / methods*