MEASUREMENT OF CEREBRAL HEMODYNAMIC PARAMETERS
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United States of America Patent
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Issued Date -
Aug 11, 2011
app pub date -
Oct 7, 2009
filing date -
Oct 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of finding an indication of a degree of cerebro-vascular bilateral asymmetry in a subject, comprising: a) measuring a first impedance waveform and a second impedance waveform of the subject's head as functions of time, in each case by finding a potential difference between two voltage electrodes associated with passing a given injected current through the head between at least two current electrodes, wherein in each case the voltage electrodes are located asymmetrically on the head, or the current is injected asymmetrically into the head, or both, and wherein the locations of the voltage electrodes and the distribution of current injection in measuring the second impedance waveform are minor images of what they are in measuring the first impedance waveform; and b) finding the indication of the degree of bilateral asymmetry from a difference between characteristics of the first and second impedance waveforms.
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