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Method of analyzing photon density waves in a medical monitor

  • US 8,401,608 B2
  • Filed: 09/30/2009
  • Issued: 03/19/2013
  • Est. Priority Date: 09/30/2009
  • Status: Active Grant
First Claim
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1. A monitoring system, comprising:

  • an emission feature configured to emit light into tissue;

    a modulator configured to modulate the emitter at a modulation frequency generally in a range of about 50 MHz to 3.0 GHz to generate a generally resolvable photon density waves;

    a detection feature configured to detect photons of the photon density waves after passage through the tissue and configured to provide a distribution of detected photons over a time period for the photon density waves; and

    a processor configured to calculate a skewness of the distribution and making determinations relating to a value of a physiologic parameter of the tissue based at least in part on the skewness of the distribution.

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