AU2019396124B2 - Gradient coil system - Google Patents

Gradient coil system Download PDF

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Publication number
AU2019396124B2
AU2019396124B2 AU2019396124A AU2019396124A AU2019396124B2 AU 2019396124 B2 AU2019396124 B2 AU 2019396124B2 AU 2019396124 A AU2019396124 A AU 2019396124A AU 2019396124 A AU2019396124 A AU 2019396124A AU 2019396124 B2 AU2019396124 B2 AU 2019396124B2
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AU
Australia
Prior art keywords
gradient
coil
bore
frustoconical
primary
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.)
Active
Application number
AU2019396124A
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English (en)
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AU2019396124A1 (en
Inventor
Feng Liu
Fangfang TANG
Riyu Wei
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Magnetica Ltd
Original Assignee
Magnetica 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
Priority claimed from AU2018904742A external-priority patent/AU2018904742A0/en
Application filed by Magnetica Ltd filed Critical Magnetica Ltd
Publication of AU2019396124A1 publication Critical patent/AU2019396124A1/en
Application granted granted Critical
Publication of AU2019396124B2 publication Critical patent/AU2019396124B2/en
Active legal-status Critical Current
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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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field 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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field
    • G01R33/4215—Screening of main or gradient magnetic field of the gradient magnetic field, e.g. using passive or active shielding of the gradient magnetic field
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0033—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room
    • 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
    • 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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
AU2019396124A 2018-12-13 2019-11-20 Gradient coil system Active AU2019396124B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2018904742 2018-12-13
AU2018904742A AU2018904742A0 (en) 2018-12-13 Gradient coil system
PCT/AU2019/051276 WO2020118352A1 (en) 2018-12-13 2019-11-20 Gradient coil system

Publications (2)

Publication Number Publication Date
AU2019396124A1 AU2019396124A1 (en) 2021-05-27
AU2019396124B2 true AU2019396124B2 (en) 2021-06-17

Family

ID=71075264

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2019396124A Active AU2019396124B2 (en) 2018-12-13 2019-11-20 Gradient coil system

Country Status (7)

Country Link
US (1) US11422214B2 (https=)
EP (1) EP3894879B1 (https=)
JP (1) JP7362147B2 (https=)
CN (1) CN113544525B (https=)
AU (1) AU2019396124B2 (https=)
ES (1) ES2986587T3 (https=)
WO (1) WO2020118352A1 (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020155137A1 (en) 2019-02-02 2020-08-06 Shanghai United Imaging Healthcare Co., Ltd. Radiation therapy system and method
CN114519289A (zh) * 2022-02-22 2022-05-20 浙江大学 用于磁共振成像的锥形阵列梯度线圈及其设计方法和应用
EP4328610A1 (de) 2022-08-25 2024-02-28 Siemens Healthineers AG Gradientenspuleneinheit für interventionelle mr-bildgebung
CN115718275B (zh) * 2022-11-28 2025-08-01 华南理工大学 一种偏中心的圆锥形头部梯度线圈及其设计方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307039A (en) * 1992-09-08 1994-04-26 General Electric Company Frustoconical magnet for magnetic resonance imaging
EP0695950A2 (en) * 1994-08-05 1996-02-07 Picker International, Inc. Gradient coil assemblies for magnetic resonance imaging apparatus
US20060055406A1 (en) * 2004-09-11 2006-03-16 General Electric Company Systems, methods and apparatus for specialized magnetic resonance imaging with dual-access conical bore
US20150048832A1 (en) * 2013-08-13 2015-02-19 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus and manufacturing method thereof
WO2016025996A1 (en) * 2014-08-18 2016-02-25 Magnetica Limited Magnet for head and extremity imaging
WO2018174726A2 (en) * 2017-03-24 2018-09-27 Victoria Link Limited Mri magnet and apparatus

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733189A (en) * 1986-06-03 1988-03-22 Massachusetts Institute Of Technology Magnetic resonance imaging systems
US5497089A (en) * 1994-03-15 1996-03-05 Picker International, Inc. Wide aperture gradient set
DE4422782C2 (de) 1994-06-29 1998-02-19 Siemens Ag Aktiv geschirmte transversale Gradientenspule für Kernspintomographiegeräte
US5416415A (en) * 1994-08-05 1995-05-16 General Electric Company Over-shoulder MRI magnet for human brain imaging
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
US6078177A (en) * 1998-01-05 2000-06-20 Picker International, Inc. Flared gradient coil set with a finite shield current
DE10004765A1 (de) * 2000-02-03 2001-08-09 Philips Corp Intellectual Pty MR-Gerät mit einer Gradientenspulen-Anordnung
AU2003272029A1 (en) * 2002-11-20 2004-06-15 Koninklijke Philips Electronics N.V. Self-shielded gradient field coil for magnetic resonance imaging
DE102004002919B4 (de) * 2004-01-20 2006-01-12 Siemens Ag Gradientenspulensystem und Verfahren zum Herstellen des Gradientenspulensystems
DE102004005278B4 (de) 2004-02-03 2008-09-11 Siemens Ag Verfahren zur Herstellung transversaler nichtzylindrischer Gradientenspulen mit zumindest einem divergenten Abschnitt
US7605587B2 (en) * 2004-11-29 2009-10-20 Hitachi Medical Corporation Magnetic resonance imaging apparatus
GB2468852A (en) * 2009-03-23 2010-09-29 Siemens Magnet Technology Ltd Arrangements and Method for Shimming a Magnetic Field
JP6366940B2 (ja) * 2014-01-09 2018-08-01 キヤノンメディカルシステムズ株式会社 磁気共鳴イメージング装置
WO2016174498A1 (en) * 2015-04-27 2016-11-03 Synaptive Medical (Barbados) Inc. Adaptive electromagnet for high performance magnetic resonance imaging
JP7050753B6 (ja) * 2016-08-15 2022-06-01 コーニンクレッカ フィリップス エヌ ヴェ 磁気共鳴検査システム用の能動シールド勾配コイルアセンブリ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5307039A (en) * 1992-09-08 1994-04-26 General Electric Company Frustoconical magnet for magnetic resonance imaging
EP0695950A2 (en) * 1994-08-05 1996-02-07 Picker International, Inc. Gradient coil assemblies for magnetic resonance imaging apparatus
US20060055406A1 (en) * 2004-09-11 2006-03-16 General Electric Company Systems, methods and apparatus for specialized magnetic resonance imaging with dual-access conical bore
US20150048832A1 (en) * 2013-08-13 2015-02-19 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus and manufacturing method thereof
WO2016025996A1 (en) * 2014-08-18 2016-02-25 Magnetica Limited Magnet for head and extremity imaging
WO2018174726A2 (en) * 2017-03-24 2018-09-27 Victoria Link Limited Mri magnet and apparatus

Also Published As

Publication number Publication date
EP3894879B1 (en) 2024-05-29
JP7362147B2 (ja) 2023-10-17
US20220011387A1 (en) 2022-01-13
CN113544525A (zh) 2021-10-22
ES2986587T3 (es) 2024-11-12
EP3894879A4 (en) 2022-01-26
EP3894879C0 (en) 2024-05-29
JP2022512410A (ja) 2022-02-03
EP3894879A1 (en) 2021-10-20
US11422214B2 (en) 2022-08-23
AU2019396124A1 (en) 2021-05-27
WO2020118352A1 (en) 2020-06-18
CN113544525B (zh) 2024-10-25

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