NDLI: High precision Multifrequency Electrical Impedance Tomography System and Preliminary imaging results on saline tank

Content Provider	IEEE Xplore Digital Library
Author	Shi Xuetao Dong Xiuzhen You Fusheng Fu Feng Liu Ruigang
Copyright Year	2005
Description	Author affiliation: Dept. of Med. Electron. Eng., Fourth Mil. Med. Univ., Xi'an (Shi Xuetao; Dong Xiuzhen; You Fusheng; Fu Feng; Liu Ruigang)
Abstract	To establish a high precision data acquisition system for multi-frequency electrical impedance tomography (EIT), a series of methods were introduced. Those methods include building a driving signal with up to four frequency components to diminish the effect of the dynamic change of tissues resistivity, extracting the impedance information by a digital demodulator that can improve the SNR by 8 times. The system that established can work at a wide range from 1.6 kHz to 380 kHz. Its CMRR is 74 dB at 100 kHz. The output impedance of current source is 2 MOmega at that frequency. And measurement precision on a 100 ohm resistor is better than -80 dB in full bandwidth. Both the quasi-static and the dynamic imaging results based on a saline tank can reflect the resistivity changes inside the phantom clearly. Therefore, the system was competent in multifrequency EIT research work
Starting Page	1492
Ending Page	1495
File Size	360036
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616714
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance Tomography Frequency Conductivity Data acquisition Data mining Demodulation Resistors Bandwidth Imaging phantoms data acquisition electrical impedance tomography (EIT) Quasistatic image Dynamic image
Content Type	Text
Resource Type	Article

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