DE69430936D1 - Gradientenspule für magnetische Resonanz und Hochfrequenz-Abschirmung - Google Patents

Gradientenspule für magnetische Resonanz und Hochfrequenz-Abschirmung

Info

Publication number
DE69430936D1
DE69430936D1 DE69430936T DE69430936T DE69430936D1 DE 69430936 D1 DE69430936 D1 DE 69430936D1 DE 69430936 T DE69430936 T DE 69430936T DE 69430936 T DE69430936 T DE 69430936T DE 69430936 D1 DE69430936 D1 DE 69430936D1
Authority
DE
Germany
Prior art keywords
magnetic resonance
gradient coil
frequency shielding
shielding
frequency
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.)
Expired - Fee Related
Application number
DE69430936T
Other languages
English (en)
Other versions
DE69430936T2 (de
Inventor
Michael A Morich
Gordon D Demeester
John L Patrick
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.)
Philips Nuclear Medicine Inc
Original Assignee
Marconi Medical Systems Inc
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 Marconi Medical Systems Inc filed Critical Marconi Medical Systems Inc
Application granted granted Critical
Publication of DE69430936D1 publication Critical patent/DE69430936D1/de
Publication of DE69430936T2 publication Critical patent/DE69430936T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/28—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
    • 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
    • G01R33/422—Screening of the radio frequency 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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3856—Means for cooling the gradient coils or thermal shielding of the gradient 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
    • G01R33/42—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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Electromagnetism (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69430936T 1993-06-21 1994-06-03 Gradientenspule für magnetische Resonanz und Hochfrequenz-Abschirmung Expired - Fee Related DE69430936T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/080,413 US5406204A (en) 1992-03-27 1993-06-21 Integrated MRI gradient coil and RF screen

Publications (2)

Publication Number Publication Date
DE69430936D1 true DE69430936D1 (de) 2002-08-14
DE69430936T2 DE69430936T2 (de) 2003-02-27

Family

ID=22157203

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69430936T Expired - Fee Related DE69430936T2 (de) 1993-06-21 1994-06-03 Gradientenspule für magnetische Resonanz und Hochfrequenz-Abschirmung

Country Status (4)

Country Link
US (1) US5406204A (de)
EP (1) EP0629875B1 (de)
JP (1) JP3689818B2 (de)
DE (1) DE69430936T2 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554929A (en) * 1993-03-12 1996-09-10 Doty Scientific, Inc. Crescent gradient coils
GB2291970A (en) * 1994-07-28 1996-02-07 Oxford Magnet Tech Double wall thermal shield for MRI magnet
DE19511834A1 (de) * 1995-03-30 1996-10-02 Siemens Ag Diagnostisches Magnetresonanzgerät
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
US5668516A (en) * 1995-12-29 1997-09-16 General Electric Company Simplified active shield superconducting magnet assembly for magnetic resonance imaging
US5990681A (en) * 1997-10-15 1999-11-23 Picker International, Inc. Low-cost, snap-in whole-body RF coil with mechanically switchable resonant frequencies
WO2001022109A1 (en) 1999-09-23 2001-03-29 Koninklijke Philips Electronics N.V. Mri apparatus including a vacuum isolated gradient coil
US6556012B2 (en) 2000-01-21 2003-04-29 Kabushiki Kaisha Toshiba Magnetic resonance imaging apparatus
US6954068B1 (en) 2000-01-21 2005-10-11 Kabushiki Kaisha Toshiba Magnetic resonance imaging apparatus
US6879852B1 (en) * 2000-07-10 2005-04-12 Otward M. Mueller Low-cost magnetic resonance imaging (MRI) Cryo-system
US6498947B2 (en) * 2001-02-23 2002-12-24 Ge Medical Systems Global Technology Company, Llc rf shielding method and apparatus
US6909283B2 (en) 2001-04-12 2005-06-21 General Electric Company Method and system to regulate cooling of a medical imaging device
US6516282B2 (en) 2001-04-19 2003-02-04 Ge Medical Systems Global Technology Company Predictive thermal control used with a vacuum enclosed coil assembly of a magnetic resonance imaging device
US7091412B2 (en) * 2002-03-04 2006-08-15 Nanoset, Llc Magnetically shielded assembly
GB0213131D0 (en) * 2002-06-07 2002-07-17 Tesla Engineering Ltd Coil arrangements
DE10258191A1 (de) * 2002-12-12 2004-07-08 Siemens Ag Verfahren zur Herstellung einer hohlzylinderförmigen Gradientenspule für ein Magnet-Resonanz-Tomographiegerät mit einer Hochfrequenzabschirmung auf ihrer Außenseite
US6783059B2 (en) * 2002-12-23 2004-08-31 General Electric Company Conduction cooled passively-shielded MRI magnet
US6930482B2 (en) * 2003-03-25 2005-08-16 Siemens Aktiengesellschaft Time-variable magnetic fields generator for a magnetic resonance apparatus
EP1682915A1 (de) * 2003-10-29 2006-07-26 Koninklijke Philips Electronics N.V. Spulensystem mit variablem sichtfeldgradienten für die magnetresonanzabbildung
DE602005012265D1 (de) * 2004-06-17 2009-02-26 Koninkl Philips Electronics Nv Magnetresonanzabbildungssystem mit eisenunterstütztem magnetfeldgradientensystem
US7102350B2 (en) * 2004-06-30 2006-09-05 General Electric Company Shielding apparatus for magnetic resonance imaging
US20060118758A1 (en) * 2004-09-15 2006-06-08 Xingwu Wang Material to enable magnetic resonance imaging of implantable medical devices
US7190170B1 (en) * 2006-03-24 2007-03-13 General Electric Company Particle doped magnetic coil
DE102006040418A1 (de) * 2006-08-29 2008-03-13 Siemens Ag Verfahren zur Herstellung eines zylindrischen Hochfrequenzschirms einer zylindrischen Gradientenspule
EP2089734A1 (de) * 2006-11-03 2009-08-19 Koninklijke Philips Electronics N.V. Geteilte gradientenspule für die magnetresonanzabbildung
US7449889B1 (en) * 2007-06-25 2008-11-11 General Electric Company Heat pipe cooled superconducting magnets with ceramic coil forms
GB2458950B (en) * 2008-04-04 2010-09-29 Siemens Magnet Technology Ltd Chamber apparatus and method of manufacture thereof
GB2483890A (en) * 2010-09-22 2012-03-28 Tesla Engineering Ltd MRIS gradient coil assembly with screening layers connected to respective coil layers
JP2011031103A (ja) * 2010-11-24 2011-02-17 Toshiba Corp 核磁気共鳴イメージング装置
DE102011076717A1 (de) * 2011-05-30 2012-12-06 Siemens Aktiengesellschaft Hochfrequenzantenneneinheit, eine Magnetresonanzvorrichtung mit einer Hochfrequenzantenneneinheit, sowie ein Herstellungsverfahren für eine Hochfrequenzantenneneinheit
MX2014004533A (es) 2011-10-18 2014-08-01 Koninkl Philips Nv Ensamble de bobina de imagenes de resonancia magnetica (mri) con protector de radiofrecuencia conmutable entre un estado bloqueado y un estado transparente.
DE102013204952B3 (de) 2013-03-20 2014-05-15 Bruker Biospin Ag Aktiv abgeschirmtes zylinderförmiges Gradientenspulensystem mit passiver HF-Abschirmung für NMR-Apparate
EP3011355B1 (de) * 2013-06-17 2022-06-15 Koninklijke Philips N.V. Gradientenspule für magnetresonanzbildgebung
JP6700479B2 (ja) 2016-08-15 2020-05-27 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 熱放射スクリーン付磁石システム
US10684336B2 (en) * 2018-10-24 2020-06-16 General Electric Company Radiofrequency coil and shield in magnetic resonance imaging method and apparatus

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587504A (en) * 1983-11-11 1986-05-06 Oxford Magnet Technology Limited Magnet assembly for use in NMR apparatus
US4761612A (en) * 1985-07-25 1988-08-02 Picker International, Inc. Programmable eddy current correction
US4703275A (en) * 1985-07-25 1987-10-27 Picker International, Inc. Method and apparatus to compensate for eddy currents in magnetic resonance imaging
EP0216590B2 (de) * 1985-09-20 2001-06-06 Btg International Limited Magnetische Abschirmungen
US4737716A (en) * 1986-02-06 1988-04-12 General Electric Company Self-shielded gradient coils for nuclear magnetic resonance imaging
US4733189A (en) * 1986-06-03 1988-03-22 Massachusetts Institute Of Technology Magnetic resonance imaging systems
US4871969A (en) * 1988-12-22 1989-10-03 General Electric Company RF shield for RF coil contained within gradient coils of NMR imaging device
IL89743A0 (en) * 1989-03-26 1989-09-28 Elscint Ltd Compact shielded gradient coil system
US5296810A (en) * 1992-03-27 1994-03-22 Picker International, Inc. MRI self-shielded gradient coils
US5289128A (en) * 1992-03-27 1994-02-22 Picker International, Inc. Superconducting gradient shield coils
US5243286A (en) * 1990-06-06 1993-09-07 Advanced Nmr Systems, Inc. Split shield for magnetic resonance imaging
US5179338A (en) * 1991-09-13 1993-01-12 General Electric Company Refrigerated superconducting MR magnet with integrated gradient coils
US5278502A (en) * 1991-09-13 1994-01-11 General Electric Company Refrigerated superconducting MR magnet with integrated cryogenic gradient coils

Also Published As

Publication number Publication date
EP0629875A1 (de) 1994-12-21
US5406204A (en) 1995-04-11
JPH07299048A (ja) 1995-11-14
DE69430936T2 (de) 2003-02-27
JP3689818B2 (ja) 2005-08-31
EP0629875B1 (de) 2002-07-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC., CLEVELA

8339 Ceased/non-payment of the annual fee