DE69230065T2 - Spektroskopie nach zeit- und frequenz-parametern zur bestimmung des sauerstoffmangels - Google Patents

Spektroskopie nach zeit- und frequenz-parametern zur bestimmung des sauerstoffmangels

Info

Publication number
DE69230065T2
DE69230065T2 DE69230065T DE69230065T DE69230065T2 DE 69230065 T2 DE69230065 T2 DE 69230065T2 DE 69230065 T DE69230065 T DE 69230065T DE 69230065 T DE69230065 T DE 69230065T DE 69230065 T2 DE69230065 T2 DE 69230065T2
Authority
DE
Germany
Prior art keywords
spectroscopy
time
oxygen deficiency
frequency parameters
determine oxygen
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69230065T
Other languages
English (en)
Other versions
DE69230065D1 (de
Inventor
Britton Chance
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Non Invasive Technology Inc
Original Assignee
Non Invasive Technology 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 Non Invasive Technology Inc filed Critical Non Invasive Technology Inc
Application granted granted Critical
Publication of DE69230065D1 publication Critical patent/DE69230065D1/de
Publication of DE69230065T2 publication Critical patent/DE69230065T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61B5/14551—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 for measuring blood gases
    • 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
    • A61B5/14551—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 for measuring blood gases
    • A61B5/14553—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 for measuring blood gases specially adapted for cerebral tissue
    • 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
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N21/3151—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using two sources of radiation of different wavelengths
    • 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
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A61B2562/0242—Special features of optical sensors or probes classified in A61B5/00 for varying or adjusting the optical path length in the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/043—Arrangements of multiple sensors of the same type in a linear array
    • 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
    • G01N2021/1789—Time resolved
    • 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
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N2021/3181—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using LEDs
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/069—Supply of sources
    • G01N2201/0696—Pulsed
DE69230065T 1991-01-24 1992-01-21 Spektroskopie nach zeit- und frequenz-parametern zur bestimmung des sauerstoffmangels Expired - Lifetime DE69230065T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64559091A 1991-01-24 1991-01-24
PCT/US1992/000463 WO1992013598A1 (en) 1991-01-24 1992-01-21 Time and frequency domain spectroscopy determining hypoxia

Publications (2)

Publication Number Publication Date
DE69230065D1 DE69230065D1 (de) 1999-11-04
DE69230065T2 true DE69230065T2 (de) 2000-05-31

Family

ID=24589636

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69230065T Expired - Lifetime DE69230065T2 (de) 1991-01-24 1992-01-21 Spektroskopie nach zeit- und frequenz-parametern zur bestimmung des sauerstoffmangels

Country Status (6)

Country Link
EP (1) EP0568628B1 (de)
JP (1) JP3247694B2 (de)
DE (1) DE69230065T2 (de)
HK (1) HK1014645A1 (de)
SG (1) SG85573A1 (de)
WO (1) WO1992013598A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5564417A (en) * 1991-01-24 1996-10-15 Non-Invasive Technology, Inc. Pathlength corrected oximeter and the like
US5873821A (en) * 1992-05-18 1999-02-23 Non-Invasive Technology, Inc. Lateralization spectrophotometer
US5555885A (en) * 1988-12-21 1996-09-17 Non-Invasive Technology, Inc. Examination of breast tissue using time-resolved spectroscopy
US5353799A (en) 1991-01-22 1994-10-11 Non Invasive Technology, Inc. Examination of subjects using photon migration with high directionality techniques
US6708048B1 (en) 1989-02-06 2004-03-16 Non-Invasive Technology, Inc. Phase modulation spectrophotometric apparatus
DE69229554T2 (de) * 1991-05-16 2000-02-10 Non Invasive Technology Inc Hämoglobin-messung zur bestimmung von stoffwechselgrössen einer person
US6549795B1 (en) 1991-05-16 2003-04-15 Non-Invasive Technology, Inc. Spectrophotometer for tissue examination
US5954053A (en) * 1995-06-06 1999-09-21 Non-Invasive Technology, Inc. Detection of brain hematoma
US6785568B2 (en) 1992-05-18 2004-08-31 Non-Invasive Technology Inc. Transcranial examination of the brain
US6058324A (en) * 1993-06-17 2000-05-02 Non-Invasive Technology, Inc. Examination and imaging of biological tissue
US5820558A (en) * 1994-12-02 1998-10-13 Non-Invasive Technology, Inc. Optical techniques for examination of biological tissue
US6542772B1 (en) 1994-12-02 2003-04-01 Non-Invasive Technology, Inc. Examination and imaging of biological tissue
EP0761159B1 (de) 1995-08-31 1999-09-29 Hewlett-Packard Company Medizinisches Überwachungsgerät, insbesondere Puls-Oximeter
US6081322A (en) * 1997-10-16 2000-06-27 Research Foundation Of State Of New York NIR clinical opti-scan system
US7006676B1 (en) 2000-01-21 2006-02-28 Medical Optical Imaging, Inc. Method and apparatus for detecting an abnormality within a host medium utilizing frequency-swept modulation diffusion tomography
FR2911961B1 (fr) 2007-01-26 2012-04-06 Electricite De France Capteur acoustique de mesure de la pression et/ou de la masse molaire d'un gaz dans une enceinte cylindrique et procede de mesure correspondant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360987A (en) * 1964-07-03 1968-01-02 Gen Precision Inc Optical radar system
US3365717A (en) * 1965-09-03 1968-01-23 South African Inventions Method of and apparatus for providing a measure of the distance between two spaced points
US3522992A (en) * 1967-06-28 1970-08-04 North American Rockwell Geodetic survey system and digital phase-meter therefor
US4972331A (en) * 1989-02-06 1990-11-20 Nim, Inc. Phase modulated spectrophotometry

Also Published As

Publication number Publication date
SG85573A1 (en) 2002-01-15
HK1014645A1 (en) 1999-09-30
JP3247694B2 (ja) 2002-01-21
EP0568628B1 (de) 1999-09-29
JPH06506127A (ja) 1994-07-14
EP0568628A1 (de) 1993-11-10
EP0568628A4 (en) 1996-04-03
WO1992013598A1 (en) 1992-08-20
DE69230065D1 (de) 1999-11-04

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