FR2381308A1 - Spectrometre a resonance magnetique nucleaire - Google Patents

Spectrometre a resonance magnetique nucleaire

Info

Publication number
FR2381308A1
FR2381308A1 FR7801569A FR7801569A FR2381308A1 FR 2381308 A1 FR2381308 A1 FR 2381308A1 FR 7801569 A FR7801569 A FR 7801569A FR 7801569 A FR7801569 A FR 7801569A FR 2381308 A1 FR2381308 A1 FR 2381308A1
Authority
FR
France
Prior art keywords
magnetic resonance
spectrometer
nuclear magnetic
resonance spectrometer
transmitter
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.)
Granted
Application number
FR7801569A
Other languages
English (en)
Other versions
FR2381308B1 (fr
Inventor
Donald C Hofer
Vincent N Kahwaty
Carl R Valentino
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2381308A1 publication Critical patent/FR2381308A1/fr
Application granted granted Critical
Publication of FR2381308B1 publication Critical patent/FR2381308B1/fr
Granted 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]
    • G01R33/46—NMR spectroscopy
    • 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/389—Field stabilisation, e.g. by field measurements and control means or indirectly by current stabilisation

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

Spectromètre à résonance magnétique nucléaire comportant un système de verrouillage pour la stabilisation du champ magnétique en utilisant une grande proportion de circuits numériques. Le spectromètre comprend un transmetteur 16 permettant d'appliquer périodiquement, par l'intermédiaire de l'enroulement 20, un champ magnétique impulsionnel modulé en radiofréquence à l'échantillon 10 de façon à fournir des signaux de décroissance d'induction libre, et un circuit de verrouillage 40 relié par l'intermédiaire du transmetteur de verrouillage 32 au bobinage de champ 22 et modifiant le courant dans ledit bobinage de façon à maintenir la période des signaux de décroissance d'induction libre à une valeur constante prédéterminée. Un tel spectromètre est peu onéreux et très efficace.
FR7801569A 1977-02-16 1978-01-16 Spectrometre a resonance magnetique nucleaire Granted FR2381308A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/769,142 US4110681A (en) 1977-02-16 1977-02-16 NMR field frequency lock system

Publications (2)

Publication Number Publication Date
FR2381308A1 true FR2381308A1 (fr) 1978-09-15
FR2381308B1 FR2381308B1 (fr) 1980-08-22

Family

ID=25084583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801569A Granted FR2381308A1 (fr) 1977-02-16 1978-01-16 Spectrometre a resonance magnetique nucleaire

Country Status (7)

Country Link
US (1) US4110681A (fr)
JP (1) JPS5823890B2 (fr)
CA (1) CA1089014A (fr)
DE (1) DE2801031A1 (fr)
FR (1) FR2381308A1 (fr)
GB (1) GB1568004A (fr)
IT (1) IT1112604B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1602913A (en) * 1978-02-15 1981-11-18 Nat Res Dev Pulsed nuclear magnetic resonance spectrometers
US4296378A (en) * 1979-04-05 1981-10-20 Southwest Research Institute Apparatus providing enhanced detection of specimens in inhomogeneous fields
JPS56150337A (en) * 1980-04-24 1981-11-20 Sumitomo Heavy Ind Ltd Electric power source device for electromagnet
US4345207A (en) * 1980-04-24 1982-08-17 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for obtaining enhanced NMR signals
JPS5841340A (ja) * 1981-09-04 1983-03-10 Hitachi Ltd 核磁気共鳴を用いた検査装置
JPS58157860U (ja) * 1982-04-16 1983-10-21 ヤンマー農機株式会社 土壌槽における作業装置
US4602213A (en) * 1982-12-28 1986-07-22 Tokyo Shibaura Denki Kabushiki Kaisha Automatic tuning circuit for nuclear magnetic resonance apparatus
US4543529A (en) * 1983-01-04 1985-09-24 Nmr Imaging, Inc. Method of tuning an NMR apparatus
JPS59164946A (ja) * 1983-03-11 1984-09-18 Hitachi Ltd 核磁気共鳴装置
FI75428C (fi) * 1984-11-21 1988-06-09 Instrumentarium Oy Foerfarande foer kartlaeggning av de kaernmagnetiska egenskaperna hos ett objekt, som skall undersoekas.
NL8701195A (nl) * 1987-05-19 1988-12-16 Philips Nv M.r.i.-inrichting met digitale zender/ontvanger.
US5162736A (en) * 1987-08-14 1992-11-10 National Research Development Corporation NMR imaging
FR2626377B1 (fr) * 1988-01-26 1990-06-01 Crouzet Sa Oscillateur nucleaire comprenant une sonde a resonance magnetique nucleaire
FI80795C (fi) * 1988-07-01 1990-07-10 Instrumentarium Oy Foerfarande och anordning foer undersoekning av aemnens egenskaper.
US5929639A (en) * 1996-07-03 1999-07-27 Doty Scientific Inc. Non-dipolar RF coil for NMR lock and homonuclear decoupling
US6037775A (en) * 1996-08-13 2000-03-14 Fonar Corporation Method and apparatus for magnetic field stabilization in a MRI system
DE10157972B4 (de) * 2001-11-27 2004-01-08 Bruker Biospin Ag NMR-Spektrometer und Betriebsverfahren mit Stabilisierung der transversalen Magnetisierung bei supraleitenden NMR-Resonatoren
US6867588B1 (en) * 2003-12-23 2005-03-15 Intel Corporation Nuclear spin resonance clock arrangements
US20140178901A1 (en) 2011-03-22 2014-06-26 The General Hospital Corporation Molecular Analysis of Tumor Samples

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012104A1 (fr) * 1968-07-01 1970-03-13 Varian Associates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388322A (en) * 1966-02-21 1968-06-11 Varian Associates Gyromagnetic resonance spectrometer having selectable internal and external resonantcontrol groups
US3873909A (en) * 1967-08-21 1975-03-25 Varian Associates Gyromagnetic apparatus employing computer means for correcting its operating parameters
FR2000229A1 (fr) * 1968-01-15 1969-09-05 Sp Konstruktor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012104A1 (fr) * 1968-07-01 1970-03-13 Varian Associates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV8127/74 *

Also Published As

Publication number Publication date
DE2801031A1 (de) 1978-08-17
US4110681A (en) 1978-08-29
IT1112604B (it) 1986-01-20
JPS5823890B2 (ja) 1983-05-18
IT7819698A0 (it) 1978-01-27
JPS53102090A (en) 1978-09-06
FR2381308B1 (fr) 1980-08-22
GB1568004A (en) 1980-05-21
CA1089014A (fr) 1980-11-04

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Legal Events

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