CN113366328A - 磁体和磁共振成像系统 - Google Patents

磁体和磁共振成像系统 Download PDF

Info

Publication number
CN113366328A
CN113366328A CN201980090649.8A CN201980090649A CN113366328A CN 113366328 A CN113366328 A CN 113366328A CN 201980090649 A CN201980090649 A CN 201980090649A CN 113366328 A CN113366328 A CN 113366328A
Authority
CN
China
Prior art keywords
magnet
coil
diameter
primary
bore
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.)
Pending
Application number
CN201980090649.8A
Other languages
English (en)
Chinese (zh)
Inventor
F·刘
韦日钰
E·韦伯
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 AU2019900450A external-priority patent/AU2019900450A0/en
Application filed by Magnica Co ltd filed Critical Magnica Co ltd
Publication of CN113366328A publication Critical patent/CN113366328A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements 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
    • G01R33/381—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
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
    • A61B5/704—Tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/0005—Geometrical arrangement of magnetic sensor elements; Apparatus combining different magnetic sensor types
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/035—Measuring direction or magnitude of magnetic fields or magnetic flux using superconductive devices
    • 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
    • G01R33/30—Sample handling arrangements, e.g. sample cells, spinning mechanisms
    • G01R33/307—Sample handling arrangements, e.g. sample cells, spinning mechanisms specially adapted for moving the sample relative to the MR system, e.g. spinning mechanisms, flow cells or means for positioning the sample inside a spectrometer
    • 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
    • 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
    • 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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56375—Intentional motion of the sample during MR, e.g. moving table imaging
    • G01R33/56383—Intentional motion of the sample during MR, e.g. moving table imaging involving motion of the sample as a whole, e.g. multistation MR or MR with continuous table motion

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Epidemiology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CN201980090649.8A 2019-02-12 2019-11-22 磁体和磁共振成像系统 Pending CN113366328A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2019900450 2019-02-12
AU2019900450A AU2019900450A0 (en) 2019-02-12 Magnets and magnetic resonance imaging systems
PCT/AU2019/051285 WO2020163892A1 (en) 2019-02-12 2019-11-22 Magnets and magnetic resonance imaging systems

Publications (1)

Publication Number Publication Date
CN113366328A true CN113366328A (zh) 2021-09-07

Family

ID=72043734

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980090649.8A Pending CN113366328A (zh) 2019-02-12 2019-11-22 磁体和磁共振成像系统

Country Status (6)

Country Link
US (1) US11630174B2 (https=)
EP (1) EP3924744A4 (https=)
JP (2) JP2022520767A (https=)
CN (1) CN113366328A (https=)
AU (1) AU2019429503B2 (https=)
WO (1) WO2020163892A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2025139B1 (en) * 2020-03-16 2021-10-19 Univ Twente Magnet apparatus and apparatus for magnetic density separation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572245A (zh) * 2003-06-20 2005-02-02 Ge医药系统环球科技公司 具有改善的边缘场的多头屏蔽梯度线圈
US20060238196A1 (en) * 2005-03-01 2006-10-26 General Electric Company Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use
CN102356330A (zh) * 2009-03-20 2012-02-15 皇家飞利浦电子股份有限公司 用于磁共振系统的等轴匀场线圈
WO2012086644A1 (ja) * 2010-12-20 2012-06-28 株式会社日立メディコ 静磁場コイル装置、核磁気共鳴撮像装置および静磁場コイル装置のコイル配置方法

Family Cites Families (18)

* 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
US5646532A (en) 1993-09-20 1997-07-08 Bruker Medizintechnik Gmbh Partial body tomograph
US5416415A (en) 1994-08-05 1995-05-16 General Electric Company Over-shoulder MRI magnet for human brain imaging
US5396207A (en) 1994-08-05 1995-03-07 General Electric Company On-shoulder MRI magnet for human brain imaging
US5818319A (en) 1995-12-21 1998-10-06 The University Of Queensland Magnets for magnetic resonance systems
US5801609A (en) 1997-04-25 1998-09-01 General Electric Company MRI head magnet
AUPQ198899A0 (en) 1999-08-03 1999-08-26 University Of Queensland, The A method of magnet design and magnet configuration
US6700468B2 (en) 2000-12-01 2004-03-02 Nmr Holdings No. 2 Pty Limited Asymmetric magnets for magnetic resonance imaging
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
US7212004B2 (en) 2005-07-19 2007-05-01 Magnetica Limited Multi-layer magnet
US7579838B2 (en) * 2005-11-18 2009-08-25 General Electric Company Systems, methods and apparatus for a partially elongated field of view in a magnetic resonance imaging system
JP2007159741A (ja) * 2005-12-12 2007-06-28 Hitachi Ltd 磁気共鳴イメージング装置及び電磁石装置
DE112007002511B4 (de) * 2006-10-27 2022-09-29 Nmr Holdings No. 2 Pty Limited Magnete zur Verwendung bei Magnetresonanzbildgebung
JP5805655B2 (ja) * 2009-12-21 2015-11-04 エヌエムアール ホールディングス ナンバー２ プロプライアタリー リミテッド 核磁気共鳴イメージングに用いられるオープンボア型磁石
KR101682198B1 (ko) * 2013-08-13 2016-12-02 삼성전자주식회사 자기공명영상장치 및 그 제조방법
CN103499797B (zh) 2013-09-09 2016-03-02 中国科学院电工研究所 磁共振成像超导磁体螺线管线圈数目和初始位置获取方法
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
WO2018174726A2 (en) * 2017-03-24 2018-09-27 Victoria Link Limited Mri magnet and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572245A (zh) * 2003-06-20 2005-02-02 Ge医药系统环球科技公司 具有改善的边缘场的多头屏蔽梯度线圈
US20060238196A1 (en) * 2005-03-01 2006-10-26 General Electric Company Systems, methods and apparatus of a magnetic resonance imaging system to produce a stray field suitable for interventional use
CN102356330A (zh) * 2009-03-20 2012-02-15 皇家飞利浦电子股份有限公司 用于磁共振系统的等轴匀场线圈
WO2012086644A1 (ja) * 2010-12-20 2012-06-28 株式会社日立メディコ 静磁場コイル装置、核磁気共鳴撮像装置および静磁場コイル装置のコイル配置方法

Also Published As

Publication number Publication date
EP3924744A4 (en) 2023-02-08
AU2019429503A1 (en) 2021-07-22
JP2024063146A (ja) 2024-05-10
AU2019429503B2 (en) 2025-09-11
US11630174B2 (en) 2023-04-18
JP2022520767A (ja) 2022-04-01
US20220128638A1 (en) 2022-04-28
EP3924744A1 (en) 2021-12-22
WO2020163892A1 (en) 2020-08-20

Similar Documents

Publication Publication Date Title
US6157281A (en) Permanent magnet assemblies for use in medical applications
US6150911A (en) Yoked permanent magnet assemblies for use in medical applications
US6889070B2 (en) Magnetic resonance imaging apparatus and assembly process thereof
EP1036541A1 (en) Magnet apparatus and mri apparatus
US20030011451A1 (en) Permanent magnet assemblies for use in medical applications
US11422214B2 (en) Gradient coil system
US6351123B1 (en) Gradient coil system for a magnetic resonance tomography apparatus
US5594401A (en) Closed superconductive magnet with uniform imaging volume
JPH10179552A (ja) 核スピントモグラフィ装置用の勾配コイル装置
JPH0824240A (ja) 磁気共鳴撮像装置
US4931759A (en) Magnetic resonance imaging magnet having minimally symmetric ferromagnetic shield
JP3970972B2 (ja) 診断用磁気共鳴装置のための磁石装置
US20130193973A1 (en) Permanent Magnet Device for Generating an Offset Uniform Magnetic Field
JP2024063146A (ja) 磁石および磁気共鳴イメージングシステム
US7212004B2 (en) Multi-layer magnet
US7898257B2 (en) Open yoke magnet assembly
US5917395A (en) Main field magnet system for a magnetic resonance device
Lin et al. Harmonic analysis and optimization for closed‐loop superconducting shim coils of 7 T MRI magnet
US7276997B2 (en) Apparatus for positioning a non-imaged extremity during a magnetic imaging process
GB2184243A (en) Electromagnet arrangements
JP2022520767A5 (https=)
US20230305088A1 (en) Lightweight magnet arrays for mri applications
EP1546750B1 (en) Magnetic field generating assembly and method
AU2004231183B2 (en) Bi-planar coil assemblies for producing specified magnetic fields
JPH10323337A (ja) 磁気共鳴映像装置

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