Title :
A 32-electrode data collection system for electrical impedance tomography
Author :
Koukourlis, C.S. ; Kyriacou, G.A. ; Sahalos, J.
Author_Institution :
Dept. of Electr. Eng, Demokritos Univ. of Thace, Xanthi, Greece
fDate :
6/1/1995 12:00:00 AM
Abstract :
A 32-electrode data collection system for electrical impedance tomography (ETT) is 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.
Keywords :
biomedical equipment; computerised tomography; data acquisition; electric impedance imaging; 32-electrode data collection system; almost DC operating frequency; demodulator; electrical impedance tomography; medical diagnostic imaging; medical instrumentation; multiplexed sample/hold circuit; voltage difference stage; Biomedical measurements; Control systems; Demodulation; Electrodes; Impedance; Integrated circuit interconnections; Multiplexing; Signal generators; Tomography; Voltage; Amplifiers; Analog-Digital Conversion; Data Collection; Electric Impedance; Electrodes; Equipment Design; Evaluation Studies as Topic; Signal Processing, Computer-Assisted; Tomography;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
