Method and apparatus for noninvasively measuring a concentration of a blood component
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United States of America Patent
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Jul 24, 2007
Grant Date -
Sep 23, 2004
app pub date -
Mar 18, 2004
filing date -
Mar 19, 2003
priority date (Note) -
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Abstract
In an apparatus and method of noninvasively measuring a concentration of a blood component, the method includes (a) varying a thickness of a body part of a subject, measuring absorption spectrums at different thicknesses of the body part, obtaining a first differential absorption spectrum between the absorption spectrums measured at different thicknesses, actually measuring concentrations of the blood component, and establishing a statistical model using the first differential absorption spectrum and the actually measured concentrations; and (b) estimating the concentration of the blood component using a second differential absorption spectrum obtained with respect to the body part based on the statistical model.
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