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METHOD OF ANALYZING PHOTON DENSITY WAVES IN A MEDICAL MONITOR

  • US 20120310060A1
  • Filed: 05/31/2011
  • Published: 12/06/2012
  • Est. Priority Date: 05/31/2011
  • Status: Abandoned Application
First Claim
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1. A medical monitoring system, comprising:

  • an emitter;

    a modulator configured to control the emitter with a drive signal that provides modulation frequencies in a frequency range suitable to produce photon density waves;

    a detector configured to detect the photon density waves to generate a photon density wave signal;

    a memory storing instructions to;

    apply a fixed or adaptive filter to the photon density wave signal to generate a conditioned photon density wave signal;

    determine a photon path length or phase delay based on the conditioned photon density wave signal; and

    calculate a physiological parameter based at least in part on the mean photon path length; and

    a processor configured to execute the instructions.

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