Method and apparatus for multi-spectral analysis of organic blood analytes in noninvasive infrared spectroscopy
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United States of America Patent
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Mar 21, 2000
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app pub date -
Feb 2, 1996
filing date -
Feb 2, 1996
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Abstract
A method and apparatus are described for determining the concentration of an organic blood analyte using multi-spectral analysis in the near infrared and mid-infrared ranges. Incident radiation containing a plurality of distinct, nonoverlapping regions of wavelengths in the range of approximately 1100 to 5000 nm is used to scan a sample. Diffusively reflected radiation emerging from the sample is detected, and a value indicative of the concentration of the analyte is obtained using an application of chemometrics techniques. Information obtained from each nonoverlapping region of wavelengths can be cross-correlated in order to remove background interferences.
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