WO2002060321A3 - Analysis of raman spectrum signals from selected regions of the eye - Google Patents

Analysis of raman spectrum signals from selected regions of the eye Download PDF

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Publication number
WO2002060321A3
WO2002060321A3 PCT/US2002/000649 US0200649W WO02060321A3 WO 2002060321 A3 WO2002060321 A3 WO 2002060321A3 US 0200649 W US0200649 W US 0200649W WO 02060321 A3 WO02060321 A3 WO 02060321A3
Authority
WO
WIPO (PCT)
Prior art keywords
eye
raman spectrum
blood
level
brain
Prior art date
Application number
PCT/US2002/000649
Other languages
French (fr)
Other versions
WO2002060321A2 (en
Inventor
James L Lambert
Mark S Borchert
Original Assignee
Los Angeles Childrens Hospital
California Inst Of Techn
James L Lambert
Mark S Borchert
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 Los Angeles Childrens Hospital, California Inst Of Techn, James L Lambert, Mark S Borchert filed Critical Los Angeles Childrens Hospital
Priority to AU2002248331A priority Critical patent/AU2002248331A1/en
Priority to CA002438027A priority patent/CA2438027A1/en
Priority to AT02717315T priority patent/ATE450195T1/en
Priority to DE60234583T priority patent/DE60234583D1/en
Priority to EP02717315A priority patent/EP1383417B1/en
Publication of WO2002060321A2 publication Critical patent/WO2002060321A2/en
Priority to US10/396,010 priority patent/US6961599B2/en
Priority to US10/396,035 priority patent/US7398119B2/en
Publication of WO2002060321A3 publication Critical patent/WO2002060321A3/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455Measuring 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14532Measuring 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14546Measuring 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 analytes not otherwise provided for, e.g. ions, cytochromes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/40Detecting, measuring or recording for evaluating the nervous system
    • A61B5/4058Detecting, measuring or recording for evaluating the nervous system for evaluating the central nervous system
    • A61B5/4064Evaluating the brain
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/41Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/411Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02Details
    • G01J3/027Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65Raman scattering
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65Raman scattering
    • G01N2021/653Coherent methods [CARS]
    • G01N2021/656Raman microprobe

Abstract

A non-invasive method for analyzing the blood-brain barrier includes obtaining a Raman spectrum of a selected portion of the eye and monitoring the Raman spectrum to ascertain a change to the dynamics of the blood brain barrier. Also, non-invasive methods for determining the brain or blood level of an analyte of interest, such as glucose, drugs, alcohol, poisons, and the like, comprises: generating an excitation laser beam (e.g., at a wavelength of 600 to 900 nanometers); focusing the excitation laser beam into the anterior chamber of an eye of the subject so that aqueous humor, vitreous humor, or one or more conjunctiva vessels in the eye is illuminated; detecting (preferably confocally detecting) a Raman spectrum from the illuminated portion of the eye; and then determining the blood level or brain level (intracranial or cerebral spinal fluid level) of an analyte of interest for the subject from the Raman spectrum.
PCT/US2002/000649 1998-07-13 2002-01-09 Analysis of raman spectrum signals from selected regions of the eye WO2002060321A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU2002248331A AU2002248331A1 (en) 2001-01-09 2002-01-09 Analysis of raman spectrum signals from selected regions of the eye
CA002438027A CA2438027A1 (en) 2001-01-09 2002-01-09 Assessing blood brain barrier dynamics or identifying or measuring selected substances or toxins in a subject by analyzing raman spectrum signals of selected regions in the eye
AT02717315T ATE450195T1 (en) 2001-01-09 2002-01-09 ANALYSIS OF RAMAN SPECtral SIGNALS FROM SELECTED EYE AREAS
DE60234583T DE60234583D1 (en) 2001-01-09 2002-01-09 ANALYSIS OF RAMAN SPECTRAL SIGNALS FROM SELECTED EYE RANGE
EP02717315A EP1383417B1 (en) 2001-01-09 2002-01-09 Analysis of raman spectrum signals from selected regions of the eye
US10/396,010 US6961599B2 (en) 2001-01-09 2003-03-25 Identifying or measuring selected substances or toxins in a subject using resonant raman signals
US10/396,035 US7398119B2 (en) 1998-07-13 2003-03-25 Assessing blood brain barrier dynamics or identifying or measuring selected substances, including ethanol or toxins, in a subject by analyzing Raman spectrum signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/756,897 US6574501B2 (en) 1998-07-13 2001-01-09 Assessing blood brain barrier dynamics or identifying or measuring selected substances or toxins in a subject by analyzing Raman spectrum signals of selected regions in the eye
US09/756,897 2001-01-09

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09/756,897 Continuation-In-Part US6574501B2 (en) 1998-07-13 2001-01-09 Assessing blood brain barrier dynamics or identifying or measuring selected substances or toxins in a subject by analyzing Raman spectrum signals of selected regions in the eye

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10/396,010 Continuation-In-Part US6961599B2 (en) 2001-01-09 2003-03-25 Identifying or measuring selected substances or toxins in a subject using resonant raman signals
US10/396,035 Continuation-In-Part US7398119B2 (en) 1998-07-13 2003-03-25 Assessing blood brain barrier dynamics or identifying or measuring selected substances, including ethanol or toxins, in a subject by analyzing Raman spectrum signals

Publications (2)

Publication Number Publication Date
WO2002060321A2 WO2002060321A2 (en) 2002-08-08
WO2002060321A3 true WO2002060321A3 (en) 2003-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/000649 WO2002060321A2 (en) 1998-07-13 2002-01-09 Analysis of raman spectrum signals from selected regions of the eye

Country Status (7)

Country Link
US (1) US6574501B2 (en)
EP (1) EP1383417B1 (en)
AT (1) ATE450195T1 (en)
AU (1) AU2002248331A1 (en)
CA (1) CA2438027A1 (en)
DE (1) DE60234583D1 (en)
WO (1) WO2002060321A2 (en)

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Publication number Publication date
US6574501B2 (en) 2003-06-03
ATE450195T1 (en) 2009-12-15
EP1383417A2 (en) 2004-01-28
DE60234583D1 (en) 2010-01-14
EP1383417B1 (en) 2009-12-02
AU2002248331A1 (en) 2002-08-12
CA2438027A1 (en) 2002-08-08
WO2002060321A2 (en) 2002-08-08
US20010034478A1 (en) 2001-10-25

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