Method and system for use in non-invasive optical measurements of blood parameters
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United States of America Patent
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Jan 31, 2006
Grant Date -
Dec 9, 2004
app pub date -
Jun 3, 2003
filing date -
Jun 3, 2003
priority date (Note) -
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Abstract
A method and device are presented for use in non-invasive optical measurements of at least one desired characteristic of patient's blood. A condition of artificial blood kinetics is created at a measurement location in a patient's blood perfused fleshy medium and maintained for a certain time period. This condition is altered over a predetermined time interval within said certain time period so as to modulate scattering properties of blood. Optical measurements are applied to the measurement location by illuminating it with incident light beams of at least two different wavelengths in a range where the scattering properties of blood are sensitive to light radiation, detecting light responses of the medium, and generating measured data indicative of time evolutions of the light responses of the medium for said at least two different wavelengths, respectively, over at least a part of said predetermined time interval.
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