DE69231859T2 - Kernquadrupolresonanz-verfahren und -geräte - Google Patents

Kernquadrupolresonanz-verfahren und -geräte

Info

Publication number
DE69231859T2
DE69231859T2 DE69231859T DE69231859T DE69231859T2 DE 69231859 T2 DE69231859 T2 DE 69231859T2 DE 69231859 T DE69231859 T DE 69231859T DE 69231859 T DE69231859 T DE 69231859T DE 69231859 T2 DE69231859 T2 DE 69231859T2
Authority
DE
Germany
Prior art keywords
quadrupol
core
devices
resonance method
resonance
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 - Fee Related
Application number
DE69231859T
Other languages
English (en)
Other versions
DE69231859D1 (de
Inventor
Alec Smith
David Shaw
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.)
BTG International Ltd
Original Assignee
BTG International Ltd
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 BTG International Ltd filed Critical BTG International Ltd
Publication of DE69231859D1 publication Critical patent/DE69231859D1/de
Application granted granted Critical
Publication of DE69231859T2 publication Critical patent/DE69231859T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/446—Multifrequency selective RF pulses, e.g. multinuclear acquisition mode
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/441—Nuclear Quadrupole Resonance [NQR] Spectroscopy and Imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/4804—Spatially selective measurement of temperature or pH
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
    • G01R33/34061—Helmholtz coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
    • G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE69231859T 1991-04-02 1992-04-01 Kernquadrupolresonanz-verfahren und -geräte Expired - Fee Related DE69231859T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919106789A GB9106789D0 (en) 1991-04-02 1991-04-02 Nqr methods and apparatus
PCT/GB1992/000577 WO1992017793A1 (en) 1991-04-02 1992-04-01 Nqr methods and apparatus

Publications (2)

Publication Number Publication Date
DE69231859D1 DE69231859D1 (de) 2001-07-12
DE69231859T2 true DE69231859T2 (de) 2001-09-20

Family

ID=10692453

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69231859T Expired - Fee Related DE69231859T2 (de) 1991-04-02 1992-04-01 Kernquadrupolresonanz-verfahren und -geräte

Country Status (7)

Country Link
US (2) US5457385A (de)
EP (1) EP0578686B1 (de)
JP (1) JP3428641B2 (de)
DE (1) DE69231859T2 (de)
GB (2) GB9106789D0 (de)
IL (1) IL101421A (de)
WO (1) WO1992017793A1 (de)

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GB9112290D0 (en) * 1991-06-07 1991-07-24 Nat Res Dev Methods and apparatus for nqr imaging
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US5365171A (en) * 1992-11-30 1994-11-15 The United States Of America As Represented By The Secretary Of The Navy Removing the effects of acoustic ringing and reducing temperature effects in the detection of explosives by NQR
EP0705271B1 (de) * 1993-06-25 2002-11-13 Affymetrix, Inc. (a Delaware Corporation) Hybridisierung und sequenzierung von nukleinsäuren
GB9319875D0 (en) * 1993-09-27 1994-03-09 British Tech Group Apparatus for and methods of nuclear resonance testing
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IL110597A (en) * 1994-08-09 2002-11-10 Micro Tag Temed Ltd Method of marking, verifying and / or identifying an object and an instrument for performing the method
GB2293885B (en) * 1994-09-29 1999-06-23 British Tech Group Method of nuclear quadrupole resonance testing and method of configuring apparatus for nuclear quadrupole resonance testing
WO1996026453A2 (en) 1995-02-24 1996-08-29 British Technology Group Limited Method of and apparatus for nuclear quadrupole resonance testing a sample, and pulse sequence for exciting nuclear quadrupole resonance
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GB9617976D0 (en) * 1996-08-28 1996-10-09 British Tech Group Method of and apparatus for nuclear quadrupole resonance testing a sample
US5804967A (en) * 1996-11-15 1998-09-08 The United States Of America As Represented By The Secretary Of The Navy Apparatus and method for generating short pulses for NMR and NQR processing
US6411208B1 (en) * 1997-06-05 2002-06-25 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for detecting a target material in a sample by pre-screening the sample for piezoelectric resonance
US7132942B1 (en) * 1997-06-05 2006-11-07 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for detecting a target material in a sample by pre-screening the sample for piezoelectric resonance
AU1949299A (en) * 1997-07-18 2000-07-31 Rypos, Inc. Self-cleaning and self-sealing particle filter
US20060226838A1 (en) * 1997-10-15 2006-10-12 Btg International Limited NQR method and apparatus for testing a sample by applying multiple excitation blocks with different delay times
US6577128B1 (en) * 1998-10-15 2003-06-10 Btg International Limited NQR method and apparatus for testing a sample by applying multiple excitation blocks with different delay times
GB9804932D0 (en) * 1998-03-06 1998-04-29 British Tech Group NQR testing method and apparatus
US6088423A (en) * 1998-06-05 2000-07-11 Vivid Technologies, Inc. Multiview x-ray based system for detecting contraband such as in baggage
US6104190A (en) * 1998-11-17 2000-08-15 The United States Of America As Represented By The Secretary Of The Navy Nuclear quadrupole resonance (NQR) method and apparatus for detecting a nitramine explosive
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AUPQ328299A0 (en) * 1999-10-06 1999-10-28 Thorlock International Limited A method and apparatus for detecting a substance using nuclear resonance
US6426623B1 (en) * 2000-09-27 2002-07-30 Mayo Foundation For Medical Education And Research MRI RF power monitor
USRE45725E1 (en) 2000-12-21 2015-10-06 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions
USRE48347E1 (en) 2000-12-21 2020-12-08 University Of Virginia Patent Foundation Method and apparatus for spin-echo-train MR imaging using prescribed signal evolutions
US6900633B2 (en) * 2001-07-02 2005-05-31 The United States Of America As Represented By The Secretary Of The Navy Substance detection by nuclear quardrupole resonance using at least two different excitation frequencies
AUPS319402A0 (en) * 2002-06-24 2002-07-18 Thorlock International Limited Monitoring probes for nuclear quadrupole resonance measurements (#12)
AUPS322802A0 (en) * 2002-06-26 2002-07-18 Thorlock International Limited Large volume scanner for nuclear quadrupole resonance measurements (#14)
AU2002952486A0 (en) * 2002-11-06 2002-11-21 Thorlock International Limited Probe coil for detecting nqr-responsive materials in large volumes
JP2004177131A (ja) * 2002-11-22 2004-06-24 National Institute For Materials Science 非接触型荷物検知装置
AU2003900418A0 (en) * 2003-01-30 2003-02-13 Qr Sciences Limited Improvements in Signal Processing For Detection Of NQR Signals
US20040222790A1 (en) * 2003-02-18 2004-11-11 Ntzo Inc. Method and apparatus for threat screening of step-on and laid-on items
US6777937B1 (en) * 2003-03-06 2004-08-17 The United States Of America As Represented By The Secretary Of The Navy Nuclear quadrupole resonance method and apparatus
US7521932B2 (en) * 2003-05-06 2009-04-21 The Penn State Research Foundation Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils
AU2003902576A0 (en) * 2003-05-26 2003-06-12 Qrsciences Technologies Pty Ltd Method And Apparatus For Detecting Nuclear Quadrupole Resonance Signals In A Sample In The Presence Of Coherent Noise (#10)
US6922460B2 (en) * 2003-06-11 2005-07-26 Quantum Magnetics, Inc. Explosives detection system using computed tomography (CT) and quadrupole resonance (QR) sensors
AR040189A1 (es) * 2003-06-11 2005-03-16 Spinlock S R L Un metodo, elementos sensores y una disposicion para la deteccion y/o analisis de compuestos que presenten, simultaneamente, resonancia cuadrupolar nuclear y resonancia magnetica nuclear o doble resonancia cuadrupolar nuclear
US20050104593A1 (en) * 2003-08-21 2005-05-19 Laubacher Daniel B. Nuclear quadrupole resonance detection system using a high temperature superconductor self-resonant coil
US7295085B2 (en) * 2003-08-21 2007-11-13 E.I. Du Pont De Nemours And Company Process for making high temperature superconductor devices each having a line oriented in a spiral fashion
US7148684B2 (en) * 2003-10-23 2006-12-12 E.I. Du Pont De Nemours And Company Method for biological identification using high temperature superconductor enhanced nuclear quadrupole resonance
US7106058B2 (en) * 2003-11-12 2006-09-12 E.I. Dupont De Nemours And Company Detection of contraband using nuclear quadrupole resonance
US7301344B2 (en) 2003-11-24 2007-11-27 E.I. Du Pont De Nemours & Co. Q-damping circuit including a high temperature superconductor coil for damping a high temperature superconductor self-resonant coil in a nuclear quadrupole resonance detection system
US7332910B2 (en) 2003-11-24 2008-02-19 E.I. Du Pont De Nemours And Company Frequency detection system comprising circuitry for adjusting the resonance frequency of a high temperature superconductor self-resonant coil
US20070245374A1 (en) 2003-11-24 2007-10-18 Inventec Corporation Video program subtitle tex recording method and system
US7375525B2 (en) 2003-12-15 2008-05-20 E.I. Du Pont De Nemours And Company Use of multiple sensors in a nuclear quadropole resonance detection system to improve measurement speed
US7049814B2 (en) * 2004-01-05 2006-05-23 Rapiscan, Inc. Nuclear quadrupole resonance based inspection system using a highly resonant and compact magnetic structure
US7345478B2 (en) * 2004-01-07 2008-03-18 Siv Technologies, Inc. Method and apparatus for detection of quadrupole nuclei in motion relative to the search region
US7355401B2 (en) * 2004-02-04 2008-04-08 E.I. Du Pont De Nemours And Company Use of two or more sensors to detect different nuclear quadrupole resonance signals of a target compound
US7265550B2 (en) * 2004-02-04 2007-09-04 E. I. Dupont De Nemours And Company Use of two or more sensors in a nuclear quadrupole resonance detection system to improve signal-to-noise ratio
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WO2006073452A2 (en) * 2004-04-30 2006-07-13 E.I. Dupont De Nemours And Company Methods and apparatus for scanning a band of frequencies by nqr using an array of high temperature superconductor sensors
US7279897B2 (en) * 2004-04-30 2007-10-09 E. I. Du Pont De Nemours And Company Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to different frequencies
EP1784654A1 (de) * 2004-08-25 2007-05-16 Philips Intellectual Property & Standards GmbH Mr-verfahren zur bestimmung der lokalen relaxationszeitwerte mittels kalibriertem phantom
WO2006060707A2 (en) 2004-12-03 2006-06-08 E.I. Dupont De Nemours And Company Matual decoupling of excitation and receive coils of a nuclear quadrupole resonance detection system
EP1831714A1 (de) * 2004-12-13 2007-09-12 E.I. Dupont De Nemours And Company Metallschirmalarm in einem kern-quadrupol-resonanz-/röntgen-kontraband-detektionssystem
US20080081375A1 (en) * 2006-10-03 2008-04-03 Oklahoma Medical Research Foundation Metabolite detection using magnetic resonance
US8436609B2 (en) * 2007-10-05 2013-05-07 Exxonmobil Upstream Research Company Method and apparatus for detection of a liquid under a surface
US8519707B2 (en) * 2009-04-02 2013-08-27 Regents Of The University Of Minnesota Pulse gap cycling for improved swift
US9880243B2 (en) 2011-06-20 2018-01-30 Regents Of The University Of Minnesota Sideband processing for magnetic resonance
US9030202B2 (en) 2011-09-29 2015-05-12 AMI Research & Development, LLC NQR detection from continuous Rabi transitions
RU2476865C1 (ru) * 2011-10-21 2013-02-27 Общество с ограниченной ответственностью "Логические системы" Датчик якр
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Also Published As

Publication number Publication date
US5583437A (en) 1996-12-10
IL101421A (en) 1997-04-15
GB2254923A (en) 1992-10-21
GB2254923B (en) 1995-11-15
US5457385A (en) 1995-10-10
EP0578686B1 (de) 2001-06-06
DE69231859D1 (de) 2001-07-12
JP3428641B2 (ja) 2003-07-22
EP0578686A1 (de) 1994-01-19
GB9207180D0 (en) 1992-05-13
JPH06506299A (ja) 1994-07-14
WO1992017793A1 (en) 1992-10-15
GB9106789D0 (en) 1991-05-22

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