WO2008065389A1 - Appareil de balayage d'imagerie par résonance magnétique avec champ magnétique radialement non-homogène - Google Patents

Appareil de balayage d'imagerie par résonance magnétique avec champ magnétique radialement non-homogène Download PDF

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Publication number
WO2008065389A1
WO2008065389A1 PCT/GB2007/004541 GB2007004541W WO2008065389A1 WO 2008065389 A1 WO2008065389 A1 WO 2008065389A1 GB 2007004541 W GB2007004541 W GB 2007004541W WO 2008065389 A1 WO2008065389 A1 WO 2008065389A1
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WO
WIPO (PCT)
Prior art keywords
field
magnet
plane
gradient
sampling volume
Prior art date
Application number
PCT/GB2007/004541
Other languages
English (en)
Inventor
Brian Philip Hills
Kevin Michael Wright
Original Assignee
Plant Bioscience Limited
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 Plant Bioscience Limited filed Critical Plant Bioscience Limited
Publication of WO2008065389A1 publication Critical patent/WO2008065389A1/fr

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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
    • G01R33/28—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
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance 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
    • G01R33/28—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
    • G01R33/34069—Saddle 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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • 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
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • 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
    • G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
    • G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
    • 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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

Un appareil de balayage par résonance magnétique comporte un premier aimant (20) de forme annulaire occupant un plan x-y et conçu pour générer, dans un volume d'échantillonnage défini à l'intérieur et dans le plan de l'anneau, un champ magnétique B0 dans la direction de l'axe des z. Le champ B0 présente une inhomogénéité radiale dans le plan x-y. Est également fournie l'inhomogénéité axiale dans le plan x-y. Un second aimant (31) est conçu pour générer, dans le volume d'échantillonnage, un champ de gradient pourvu d'un champ dans la direction de l'axe des z et un gradient dBz/du, où u est un axe sur le plan x-y. Une bobine RF (32) est conçue pour générer un champ magnétique B1 transversal au champ B0 dans le volume d'échantillonnage. Les données de résonance magnétique sont acquises par rapport à une tranche de contour (24) dans le volume d'échantillonnage, la tranche de contour constituant une partie périphérique de l'échantillon s'étendant autour de l'axe des z et dans le plan x-y du volume d'échantillonnage.
PCT/GB2007/004541 2006-11-28 2007-11-28 Appareil de balayage d'imagerie par résonance magnétique avec champ magnétique radialement non-homogène WO2008065389A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0623690.5 2006-11-28
GB0623690A GB2445759A (en) 2006-11-28 2006-11-28 Magnetic resonance imaging scanner

Publications (1)

Publication Number Publication Date
WO2008065389A1 true WO2008065389A1 (fr) 2008-06-05

Family

ID=37636624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/004541 WO2008065389A1 (fr) 2006-11-28 2007-11-28 Appareil de balayage d'imagerie par résonance magnétique avec champ magnétique radialement non-homogène

Country Status (2)

Country Link
GB (1) GB2445759A (fr)
WO (1) WO2008065389A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017134635A1 (fr) * 2016-02-04 2017-08-10 Clear-Cut Medical Ltd. Système d'imagerie irm utilisant un réseau d'aimants permanents
WO2018187826A1 (fr) * 2017-04-13 2018-10-18 The University Of Queensland Agencement d'aimants de pré-polarisation
WO2018187825A1 (fr) * 2017-04-13 2018-10-18 The University Of Queensland Agencement d'aimant de mesure
EP3557276A1 (fr) * 2018-04-16 2019-10-23 Siemens Healthcare GmbH Procédé et dispositif de commande destinés à la génération d'images par résonance magnétique à l'interieur et à l'exterieur du volume d'homogénéité du champ magnétique b0
US20200011952A1 (en) * 2014-09-05 2020-01-09 Hyperfine Research, Inc. Automatic configuration of a low field magnetic resonance imaging system
US11269034B2 (en) 2019-05-09 2022-03-08 Siemens Healthcare Gmbh Basic field magnet arrangement for a magnetic resonance tomography system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104507386B (zh) * 2012-06-15 2019-04-19 通用医疗公司 旋转阵列的永磁体用于便携式磁共振成像的系统和方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63272335A (ja) * 1986-11-18 1988-11-09 Toshiba Corp 磁気共鳴イメ−ジング装置
EP0399789A2 (fr) * 1989-05-22 1990-11-28 The Regents Of The University Of California Structure de champ marginal pour l'imagerie à résonance magnétique
US5428292A (en) * 1994-04-29 1995-06-27 General Electric Company Pancake MRI magnet with modified imaging volume
US5517118A (en) * 1994-04-25 1996-05-14 Panacea Medical Laboratories Subslicing for remotely positioned MRI
EP1006366A1 (fr) * 1998-12-01 2000-06-07 Commissariat à l'Energie Atomique Mesure rmn sur des objects de volume important
WO2001070109A1 (fr) * 2000-03-22 2001-09-27 Specialty Magnetics Limited Appareil et procede d'imagerie par resonance magnetique
US6704594B1 (en) * 2000-11-06 2004-03-09 Topspin Medical (Israel) Limited Magnetic resonance imaging device
US20040066194A1 (en) * 2001-01-12 2004-04-08 Slade Robert Andrew Magnetic field generating assembly and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424580C2 (de) * 1994-07-13 1996-09-05 Bruker Analytische Messtechnik NMR-Scheibenspule
EP0770883B1 (fr) * 1995-10-23 2004-04-07 General Electric Company Aimant d'IRM ouvert à refroidissement par fluide cryogénique avec champ magnétique uniforme
JP4152440B2 (ja) * 1996-07-01 2008-09-17 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Ｍｒ画像化装置
GB0417094D0 (en) * 2004-07-30 2004-09-01 Univ Aberdeen Magnetic resonance detection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63272335A (ja) * 1986-11-18 1988-11-09 Toshiba Corp 磁気共鳴イメ−ジング装置
EP0399789A2 (fr) * 1989-05-22 1990-11-28 The Regents Of The University Of California Structure de champ marginal pour l'imagerie à résonance magnétique
US5517118A (en) * 1994-04-25 1996-05-14 Panacea Medical Laboratories Subslicing for remotely positioned MRI
US5428292A (en) * 1994-04-29 1995-06-27 General Electric Company Pancake MRI magnet with modified imaging volume
EP1006366A1 (fr) * 1998-12-01 2000-06-07 Commissariat à l'Energie Atomique Mesure rmn sur des objects de volume important
WO2001070109A1 (fr) * 2000-03-22 2001-09-27 Specialty Magnetics Limited Appareil et procede d'imagerie par resonance magnetique
US6704594B1 (en) * 2000-11-06 2004-03-09 Topspin Medical (Israel) Limited Magnetic resonance imaging device
US20040066194A1 (en) * 2001-01-12 2004-04-08 Slade Robert Andrew Magnetic field generating assembly and method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200011952A1 (en) * 2014-09-05 2020-01-09 Hyperfine Research, Inc. Automatic configuration of a low field magnetic resonance imaging system
WO2017134635A1 (fr) * 2016-02-04 2017-08-10 Clear-Cut Medical Ltd. Système d'imagerie irm utilisant un réseau d'aimants permanents
CN109196341A (zh) * 2016-02-04 2019-01-11 明确医疗有限公司 使用永磁体阵列的mri成像系统
US10746827B2 (en) 2016-02-04 2020-08-18 Clear-Cut Medical Ltd. MRI imaging system using permanent magnet array
WO2018187826A1 (fr) * 2017-04-13 2018-10-18 The University Of Queensland Agencement d'aimants de pré-polarisation
WO2018187825A1 (fr) * 2017-04-13 2018-10-18 The University Of Queensland Agencement d'aimant de mesure
US11204404B2 (en) 2017-04-13 2021-12-21 The University Of Queensland Measurement magnet arrangement
US11333728B2 (en) 2017-04-13 2022-05-17 The University Of Queensland Pre-polarisation magnet arrangement
EP3557276A1 (fr) * 2018-04-16 2019-10-23 Siemens Healthcare GmbH Procédé et dispositif de commande destinés à la génération d'images par résonance magnétique à l'interieur et à l'exterieur du volume d'homogénéité du champ magnétique b0
CN110389310A (zh) * 2018-04-16 2019-10-29 西门子医疗有限公司 用于产生磁共振记录的方法和控制装置
US10768257B2 (en) 2018-04-16 2020-09-08 Siemens Healthcare Gmbh Method and apparatus for generating magnetic resonance images
US11269034B2 (en) 2019-05-09 2022-03-08 Siemens Healthcare Gmbh Basic field magnet arrangement for a magnetic resonance tomography system

Also Published As

Publication number Publication date
GB0623690D0 (en) 2007-01-03
GB2445759A (en) 2008-07-23

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