Author Trudelle S. Adler A. Guardo R. Institution Inst. de Genie Biomed., Ecole Polytech., Montreal, Que., Canada. Title Electrical impedance tomography: characterization of in-vitro performance. Source 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21 Canadian Medical and Biological Engineering Conference (Cat. No.95CH35746). IEEE. Part vol.1, 1997, pp.563-4 vol.1. New York, NY, USA. Conference Information Proceedings of 17th International Conference of the Engineering in Medicine and Biology Society. Montreal, Que., Canada. 20-23 Sept. 1995. Abstract Electrical impedance tomography uses surface electrical measurements to image changes in the conductivity distribution within a medium. Image interpretation, however, is difficult because of the dependance of the imaged contrast on radial position, height relative to the electrode plane and conductivity contrast. The authors propose a linear model which relates image amplitude and measurement error to target volumes and calibrate the parameters of this model for their system. The system has a mean error of 6.0 ml for volume measurement in physiological conditions.