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A 32-electrode data collection system for electrical impedance tomography
C S Koukourlis1, G A Kyriacou, J N Sahalos
1Department of Electrical Engineering, Demokritos University of Thrace, Xanthi, Greece.
IEEE Transactions on Bio-Medical Engineering
|June 1, 1995
Abstract:
A 32-electrode data collection system for Electrical Impedance Tomography (EIT) will be presented. In this system, the demodulator is a multiplexed sample and hold (S&H) circuit followed by a voltage difference stage. This configuration provides high CMRR due to the low (almost DC) operating frequency of the signals the difference stage is required to process.