Analyzing photon density waves in a medical monitor
First Claim
1. One or more non-transitory computer-readable media having stored thereon program instructions to facilitate the determination of physiological parameters of tissue, wherein the program instructions, when executed by a computing system, direct the computing system to at least:
- drive a light source to emit light at a modulation frequency to generate photon density waves;
receive a signal from a detector, wherein the signal is representative of photons of the photon density waves that have propagated through a tissue;
determine a skewness of a distribution of the photons; and
determine a physiologic parameter of the tissue based at least in part on the skewness of the distribution.
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Accused Products
Abstract
A monitoring system that may include an emission feature capable of emitting light into tissue, a modulator portion capable of modulating the emitter at a modulation frequency to generate photon density waves, a detection portion capable of detecting photons of the photon density waves after propagation through the tissue and capable of providing a distribution of detected photons over a time period for the photon density waves, and an analysis portion capable of calculating 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.
7 Citations
14 Claims
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1. One or more non-transitory computer-readable media having stored thereon program instructions to facilitate the determination of physiological parameters of tissue, wherein the program instructions, when executed by a computing system, direct the computing system to at least:
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drive a light source to emit light at a modulation frequency to generate photon density waves; receive a signal from a detector, wherein the signal is representative of photons of the photon density waves that have propagated through a tissue; determine a skewness of a distribution of the photons; and determine a physiologic parameter of the tissue based at least in part on the skewness of the distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of analyzing tissue, comprising:
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receiving a signal from a detector, wherein the signal is representative of photons of the photon density waves that have propagated through a tissue; determining a skewness of a distribution of the photons; and determining a physiologic parameter of the tissue based at least in part on the skewness of the distribution. - View Dependent Claims (11, 12, 13, 14)
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Specification