WO2001084122A3 - Methods and apparatus for spectroscopic calibration model transfer - Google Patents

Methods and apparatus for spectroscopic calibration model transfer Download PDF

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Publication number
WO2001084122A3
WO2001084122A3 PCT/US2001/013938 US0113938W WO0184122A3 WO 2001084122 A3 WO2001084122 A3 WO 2001084122A3 US 0113938 W US0113938 W US 0113938W WO 0184122 A3 WO0184122 A3 WO 0184122A3
Authority
WO
WIPO (PCT)
Prior art keywords
instrument
calibration model
calibration
methods
tailored
Prior art date
Application number
PCT/US2001/013938
Other languages
French (fr)
Other versions
WO2001084122A2 (en
Inventor
Edward V Thomas
Robert K Rowe
Michael J Haass
Original Assignee
Rio Grande Medical Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rio Grande Medical Tech Inc filed Critical Rio Grande Medical Tech Inc
Priority to EP01934957A priority Critical patent/EP1279025A2/en
Priority to CA002407944A priority patent/CA2407944A1/en
Priority to JP2001581096A priority patent/JP2004501357A/en
Priority to AU2001261098A priority patent/AU2001261098A1/en
Publication of WO2001084122A2 publication Critical patent/WO2001084122A2/en
Publication of WO2001084122A3 publication Critical patent/WO2001084122A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1495—Calibrating or testing of in-vivo probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light

Abstract

A method and apparatus for measuring a biological attribute, such as the concentration of an analyte, particularly a blood analyte in tissue such as glucose. The method utilizes spectrographic techniques in conjunction with an improved instrument-tailored calibration model. In a calibration phase, calibration model data is modified to reduce or eliminate instrument-specific attributes, resulting in a calibration data set modeling intra-instrument variation. In a prediction phase, the prediction process is tailored for each target instrument separately using a minimal number of spectral measurements from each instrument.
PCT/US2001/013938 2000-05-03 2001-04-30 Methods and apparatus for spectroscopic calibration model transfer WO2001084122A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP01934957A EP1279025A2 (en) 2000-05-03 2001-04-30 Methods and apparatus for spectroscopic calibration model transfer
CA002407944A CA2407944A1 (en) 2000-05-03 2001-04-30 Methods and apparatus for spectroscopic calibration model transfer
JP2001581096A JP2004501357A (en) 2000-05-03 2001-04-30 Method and apparatus for transferring a spectroscopic calibration model
AU2001261098A AU2001261098A1 (en) 2000-05-03 2001-04-30 Methods and apparatus for spectroscopic calibration model transfer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/563,865 2000-05-03
US09/563,865 US6441388B1 (en) 1998-10-13 2000-05-03 Methods and apparatus for spectroscopic calibration model transfer

Publications (2)

Publication Number Publication Date
WO2001084122A2 WO2001084122A2 (en) 2001-11-08
WO2001084122A3 true WO2001084122A3 (en) 2002-05-23

Family

ID=24252197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/013938 WO2001084122A2 (en) 2000-05-03 2001-04-30 Methods and apparatus for spectroscopic calibration model transfer

Country Status (6)

Country Link
US (1) US6441388B1 (en)
EP (1) EP1279025A2 (en)
JP (1) JP2004501357A (en)
AU (1) AU2001261098A1 (en)
CA (1) CA2407944A1 (en)
WO (1) WO2001084122A2 (en)

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JP2004501357A (en) 2004-01-15
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