J. N. Wu et al. / Journal of Biosciences and Medicines 1 (2013) 14-18
Copyright © 2013 SciRes. OPEN ACCESS
trodes EIT digital data acquisition system can complete
the multi-channel voltage signal acquisition and pro-
cessing. Although there are still some defects left to be
further studied and solved. We hope it can take the ad-
vantages of digital system to put forward the applica-
tion of electrical impedance tomography.
REFERENCES
[1] Brown, B.H. and Seagar, A.D. (1987) The Sheffield data
collection system. Clinical Physics and Physiological
Measurement, 8, 91-97.
http://dx.doi.org/10.1088/0143-0815/8/4A/012
[2] Smith, R.W.M. and Freeston, I.L. (1995) A real-time elec-
trical impedance tomography system for clinical use- de-
sign and preliminary results. IEEE Transactions on Bio-
medical Engineering, 42, 133-140.
http://dx.doi.org/10.1109/10.341825
[3] Wilson, A.J., Milnes, P., Waterworth, A.R., Smallwood,
R.H. and Brown, B.H. (2001) Mk3.5: A modular, multi-
frequency successor to the Mk3a EIS/EIT system. Physi-
ological Measurement, 22, 49-54.
http://dx.doi.org/10.1088/0967-3334/22/1/307
[4] Christopher William Lawrence Denyer (1996) Electron-
ics for real-time and three-dimensional electrical imped-
ance tomographs. Christopher William Lawrence Denyer,
Oxford.
[5] Cook, R.D., Saulnier, G.J., Gisser, D.G., Goble, J.C., Ne-
well, J.C. and Isaacson, D. (1994) ACT3: A high-speed,
high-precision electrical impedance tomography. IEEE
Transactions on Bio- medical Engineering, 41, 713-722.
http://dx.doi.org/10.1109/10.310086
[6] Halter, R., Hartov, A. and Paulsen, K.D. (2004) Design
and implementation of a high frequency electrical impe-
dance tomography system. Physiological Measurement,
25, 379-390.
http://dx.doi.org/10.1088/0967-3334/25/1/041
[7] Cui, Z.Q., Wang, H.X., Tang, L., Zhang, L.F., Chen, X.Y.
and Yan, Y. (2008) A specific data acquisition scheme
for electrical tomography. IEEE Proceedings of Instru-
mentation and Measurement Technology Conference,
IMTC 2008, Victori a, 12-15 May 2008, 726-729.
[8] Zhao, L.P. and Chen, X.X. (2010) Design of electrical
impedance tomography data acquisition system based on
128 electrodes. Transducer and Microsystem Technolo-
gies, 2010, 29, 83-88.
[9] Shi, X.T., You, F.S., Ji, Z.Y., Fu, F., Liu, R.G. and Dong,
X.Z. (2010) Digital demodulation in data acquisition sys-
tem for multi-frequency electrical impedance tomography.
4th International Conference on Bioinformatics and Bio-
medical Engineering (iCBBE), Chengdu, 18-20 June
2010, 1-3.
[10] Xilinx Inc. (2010) PicoBlaze 8-bit embedded microcon-
troller user guide, UG129 (v2.0).
[11] Rafiei-Naeini, M. and McCann, H. (2008) Low-noise cur-
rent excitation sub-system for medical EIT. Physiological
Measurement, 29, 173-184.
http://dx.doi.org/10.1088/0967-3334/29/6/S15
[12] Zhang, X.-H. and Wang, H.-X. (2008) Phase sensitive de -
modulation in ECT system. Microcomputer Information,
24, 300-302.
[13] Wen, X.N., Wang, H.X. and He, Y.B. (2006) Application
of USB communication module in EIT data acquisition
system. Electronic Measurement Technology, 29, 163-
165.
[14] Seagar, A.D. and Brown, B.H. (1987) Limitations in
hardware design in impedance imaging. Clinical Physics
and Physiological Measurement, 8, 85-90.
[15] Sha, H. and Wang, Y. (2008) A high precision data col-
lection method in electrical impedance tomography. Chi-
nese Journal of Biomedical Engineering, 27, 675-678.
[16] Ren, C.-S. and Wa ng, Y. (2006) Simulation study for
comparing line electrodes with compound electrodes in
medical impedance tomography. Chinese Journal of Bio-
medical Engineering, 25, 637-640.