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Digital biomedical electrical impedance tomography based on FPGA

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DOI: 10.4236/jbm.2013.12004    2,913 Downloads   5,254 Views   Citations

ABSTRACT

A digital biomedical electrical impedance tomography (EIT) system is developed with the aid of FPGA. The key elements of EIT system are described specifically in the paper. The functions are realized to generate excitation source, switch electrode channels, deal collected signals, demodulate measured voltages etc. The system is tested by a circular tank with 16 stainless electrodes attached around the boundary. The adjacent incentive adjacent measurement mode is adapted to collect boundary voltages of the interesting field. By testing, the system works with 36 dB signal-to-noise ratio (SNR) when 1 mA 100 KHz current is applied into a homogenous tank.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Wu, J. , Chen, X. and Ding, Z. (2013) Digital biomedical electrical impedance tomography based on FPGA. Journal of Biosciences and Medicines, 1, 14-18. doi: 10.4236/jbm.2013.12004.

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