HK1014645A1 - Time and frequency domain spectroscopy determining hypoxia - Google Patents

Time and frequency domain spectroscopy determining hypoxia

Info

Publication number
HK1014645A1
HK1014645A1 HK98116084A HK98116084A HK1014645A1 HK 1014645 A1 HK1014645 A1 HK 1014645A1 HK 98116084 A HK98116084 A HK 98116084A HK 98116084 A HK98116084 A HK 98116084A HK 1014645 A1 HK1014645 A1 HK 1014645A1
Authority
HK
Hong Kong
Prior art keywords
time
frequency domain
domain spectroscopy
spectroscopy determining
determining hypoxia
Prior art date
Application number
HK98116084A
Other languages
English (en)
Inventor
Britton Chance
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
Publication of HK1014645A1 publication Critical patent/HK1014645A1/xx

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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Neurology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
HK98116084A 1991-01-24 1998-12-28 Time and frequency domain spectroscopy determining hypoxia HK1014645A1 (en)

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 (1)

Publication Number Publication Date
HK1014645A1 true HK1014645A1 (en) 1999-09-30

Family

ID=24589636

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98116084A HK1014645A1 (en) 1991-01-24 1998-12-28 Time and frequency domain spectroscopy determining hypoxia

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
US6549795B1 (en) 1991-05-16 2003-04-15 Non-Invasive Technology, Inc. Spectrophotometer for tissue examination
EP0591289B1 (de) * 1991-05-16 1999-07-07 Non-Invasive Technology, Inc. Hämoglobin-messung zur bestimmung von stoffwechselgrössen einer person
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
JPH06506127A (ja) 1994-07-14
WO1992013598A1 (en) 1992-08-20
JP3247694B2 (ja) 2002-01-21
EP0568628A4 (en) 1996-04-03
EP0568628B1 (de) 1999-09-29
DE69230065D1 (de) 1999-11-04
SG85573A1 (en) 2002-01-15
EP0568628A1 (de) 1993-11-10
DE69230065T2 (de) 2000-05-31

Similar Documents

Publication Publication Date Title
GB2273985B (en) Tape measure and accessory combinations
FI935149A0 (fi) Frekvensdiversitetsaendare och -mottagare
SG48112A1 (en) Spectral data measurement and correction
HK1014645A1 (en) Time and frequency domain spectroscopy determining hypoxia
IL99327A0 (en) Frequency counter
GR3026667T3 (en) Frequency domain polarimeter
EP0484629A3 (en) Constant events frequency measurement and fast inverse circuit
EP0587915A4 (de) Messeinrichtung für eigenfrequenz und tensiometer der solch eine messeinrichtung verwendet.
GB2255124B (en) Window and like constructions
GB2240134B (en) An easily fixable and removable fastener
EP0503186A3 (en) Keypad asssembly and instrument using same
GB9324980D0 (en) Lockable window hinge
EP0521652A3 (en) Frequency multiplier
EP0457014A3 (en) Door locking device and cabinet-carriage equipped therewith
GB2258693B (en) Improvements in hinges of the lift-off type
GB9123961D0 (en) Doors and the like
SG42462A1 (en) Frequency range detector
GB9212052D0 (en) Thickness measurement
KR940023691U (ko) 카운터 및 주파수 분할기 장치(Counter and/or divider arrangement)
GB8914872D0 (en) Doorstep carton and bottlecooler
GB2261091B (en) Frequency divider
GB8914880D0 (en) Video scrambling in the frequency domain
GB9103036D0 (en) Frequency counter
GB9126914D0 (en) Calibration and measurement methods
HUT63225A (en) Door and window securing apparatus

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20120120