Method for measuring the myocardial electrical impedance spectrum
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United States of America Patent
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Oct 3, 1995
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N/A
app pub date -
Oct 8, 1993
filing date -
Oct 8, 1993
priority date (Note) -
Expired
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Abstract
A method for measuring the complex impedance spectrum of a portion of the myocardium by placing two electrodes on a portion of the myocardium and applying a current pulse to the electrodes to generate a voltage response between the electrodes. Both the current pulse and voltage response are sampled and digitized and then a Fast fourier transform is taken of both the current pulse and the voltage response to obtain a complex current pulse spectrum and a complex voltage response spectrum. Next, the complex voltage response spectrum is divided by the complex current pulse spectrum to obtain the complex impedance spectrum.
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