Abstract
Electrical Impedance Tomography (EIT) can esti- mate thorax fluid/air content and distribution. Its use in crit- ically ill patients is promising and may prove clinically use- ful. Currents are injected and voltages measured in the tho- rax boundary. The measurements are used to reconstruct to- mographic images. An EIT system was implemented based on evaluation board OMAP-L137 (Spectrum Digital) and How- land current source. The board main components are the OMAP-L137 processor with DSP C6747 and AIC 3106 audio codec (Texas Instrument). Fewer than 5% difference in volt- ages against the oscilloscope was measured in the range between 42mV and 1.5V. The entire system showed 8.53% difference when measuring the real part of impedance.
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© 2016 Springer Science+Business Media Singapore
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Alfaro, N., Arregui, M., Martinucci, F., Santos, E., Simini, F. (2016). Audio Codec and Digital Signal Processor for an Electrical Impedance Tomography System. In: Simini, F., Bertemes-Filho, P. (eds) II Latin American Conference on Bioimpedance. IFMBE Proceedings, vol 54. Springer, Singapore. https://doi.org/10.1007/978-981-287-928-8_5
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DOI: https://doi.org/10.1007/978-981-287-928-8_5
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