Cerebral Perfusion Monitor
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United States of America Patent
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Issued Date -
Jun 12, 2014
app pub date -
Jul 15, 2013
filing date -
Jan 15, 2002
priority date (Note) -
Abandoned
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Abstract
A method of estimating cerebral blood flow by analyzing IPG and PPG signals of the head, the method comprising:
- a) finding a maximum slope or most negative slope or the IPG signal, within at least a portion of the cardiac cycle;b) finding a maximum slope or most negative slope of the PPG signal, within at least a portion of the cardiac cycle;c) finding a ratio of the maximum or most negative slope of the IPG signal to the maximum or most negative slope of the PPG signal; andd) calculating a cerebral blood flow indicator from the ratio.
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