CN113544525B - 梯度线圈系统 - Google Patents

梯度线圈系统 Download PDF

Info

Publication number
CN113544525B
CN113544525B CN201980082373.9A CN201980082373A CN113544525B CN 113544525 B CN113544525 B CN 113544525B CN 201980082373 A CN201980082373 A CN 201980082373A CN 113544525 B CN113544525 B CN 113544525B
Authority
CN
China
Prior art keywords
gradient
coil
gradient coil
bore
diameter
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
CN201980082373.9A
Other languages
English (en)
Chinese (zh)
Other versions
CN113544525A (zh
Inventor
F·刘
R·魏
F·唐
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.)
Magnica Co ltd
Original Assignee
Magnica Co 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 Magnica Co ltd filed Critical Magnica Co ltd
Publication of CN113544525A publication Critical patent/CN113544525A/zh
Application granted granted Critical
Publication of CN113544525B publication Critical patent/CN113544525B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G01R33/28—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)
CN201980082373.9A 2018-12-13 2019-11-20 梯度线圈系统 Active CN113544525B (zh)

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
CN113544525A CN113544525A (zh) 2021-10-22
CN113544525B true CN113544525B (zh) 2024-10-25

Family

ID=71075264

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980082373.9A Active CN113544525B (zh) 2018-12-13 2019-11-20 梯度线圈系统

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 (2)

* 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
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set

Family Cites Families (19)

* 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
US5485087A (en) * 1994-08-05 1996-01-16 Picker International, Inc. Magnetic resonance insert gradient coils with parabolic returns for improved access
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
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
US7498810B2 (en) * 2004-09-11 2009-03-03 General Electric Company Systems, methods and apparatus for specialized magnetic resonance imaging with dual-access conical bore
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
KR101682198B1 (ko) * 2013-08-13 2016-12-02 삼성전자주식회사 자기공명영상장치 및 그 제조방법
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
CN106662625B (zh) * 2014-08-18 2019-12-03 马格内蒂卡有限责任公司 用于头和手足成像的磁体
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
WO2018174726A2 (en) * 2017-03-24 2018-09-27 Victoria Link Limited Mri magnet and apparatus

Patent Citations (2)

* 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
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set

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
AU2019396124B2 (en) 2021-06-17
WO2020118352A1 (en) 2020-06-18

Similar Documents

Publication Publication Date Title
CN113544525B (zh) 梯度线圈系统
US6150911A (en) Yoked permanent magnet assemblies for use in medical applications
US6529005B1 (en) Device for homogenizing a magnetic field
US5166619A (en) Gradient coil assembly for a magnetic resonance imaging apparatus
US10718833B2 (en) Magnet for head extremity imaging
US7417432B2 (en) Asymmetric ultra-short gradient coil for magnetic resonance imaging system
US6351123B1 (en) Gradient coil system for a magnetic resonance tomography apparatus
JP2022512410A5 (https=)
US7276997B2 (en) Apparatus for positioning a non-imaged extremity during a magnetic imaging process
US11630174B2 (en) Magnets and magnetic resonance imaging systems
JP2022520767A5 (https=)
KR101822392B1 (ko) 동시 자기공명영상 획득이 가능한 자기공명영상 시스템
While et al. A time-harmonic target-field method for designing shielded RF coils in MRI
JP4839078B2 (ja) 磁気共鳴イメージング装置及び電磁石装置
Xie et al. An improved passive shimming method for low-field superconducting MRI
WO2026050818A1 (en) Method and apparatus for passive shimming in mri systems using hollow shim portions

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant