An automatic recording system for measurements of biological impedances at different frequencies is described. The system comprises a signal synthesizer and a network analyser controlled by a desk calculator. The impedance and phase angle are recorded at one hundred and sixty logarithmically-spaced frequencies between 100 Hz and 1 MHz. A pilot study was conducted to explore the usefulness of the system for investigating fluid balance problems.
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| http://dx.doi.org/10.3109/03091907809161760 | DOI Listing |
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