Measurement of an analyte concentration in a scattering medium
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United States of America Patent
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Oct 5, 2004
Grant Date -
Jan 22, 2004
app pub date -
Jul 19, 2002
filing date -
Jul 19, 2002
priority date (Note) -
Expired
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Abstract
A non-invasive detection method for glucose and other constituents of interest in a sample is described. The apparatus and methods of the invention provide an analog of color perception of human vision, preferably in the near infrared region, replacing the spectrophotometers used in other non-invasive near infrared detection methods. A plurality of detection units are used, each covering a broad region of the detected spectrum, paralleling color perception and colorimetry. In some circumstances, a neural net is used for analysis, allowing the system to learn. Analyte concentrations in scattering mediums can be obtained by calibrating the results with in vitro measurements.
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