System and method for photon density wave pulse oximetry and pulse hemometry
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United States of America Patent
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Feb 26, 2013
Grant Date -
Apr 1, 2010
app pub date -
Sep 30, 2008
filing date -
Sep 30, 2008
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Abstract
Present embodiments are directed to a system and method capable of modulating light at a modulation frequency, wherein the modulation frequency is somewhere above about 50 MHz and below about 3 GHz, to generate photon density waves in a medium, detecting relative amplitude changes and phase shifts in the photon density waves, and detecting and graphically indicating a physiologic value related to scattering particles in the medium based on the phase shifts.
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