DE3567104D1 - Nuclear magnetic resonance eddy field suppression apparatus - Google Patents

Nuclear magnetic resonance eddy field suppression apparatus

Info

Publication number
DE3567104D1
DE3567104D1 DE8585302730T DE3567104T DE3567104D1 DE 3567104 D1 DE3567104 D1 DE 3567104D1 DE 8585302730 T DE8585302730 T DE 8585302730T DE 3567104 T DE3567104 T DE 3567104T DE 3567104 D1 DE3567104 D1 DE 3567104D1
Authority
DE
Germany
Prior art keywords
gradient
field
switching
eddy
magnetic resonance
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
Application number
DE8585302730T
Other languages
English (en)
Inventor
David C Flugan
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.)
Siemens AG
Original Assignee
Technicare Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24409186&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3567104(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Technicare Corp filed Critical Technicare Corp
Application granted granted Critical
Publication of DE3567104D1 publication Critical patent/DE3567104D1/de
Expired 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
    • G01R33/385—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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE8585302730T 1984-04-19 1985-04-18 Nuclear magnetic resonance eddy field suppression apparatus Expired DE3567104D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/601,897 US4585995A (en) 1984-04-19 1984-04-19 Nuclear magnetic resonance eddy field suppression apparatus

Publications (1)

Publication Number Publication Date
DE3567104D1 true DE3567104D1 (en) 1989-02-02

Family

ID=24409186

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585302730T Expired DE3567104D1 (en) 1984-04-19 1985-04-18 Nuclear magnetic resonance eddy field suppression apparatus

Country Status (4)

Country Link
US (1) US4585995A (de)
EP (1) EP0164199B1 (de)
AT (1) ATE39575T1 (de)
DE (1) DE3567104D1 (de)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4743851A (en) * 1985-08-27 1988-05-10 Resonex, Inc. Apparatus and method for creating non-orthogonal magnetic resonance imaging
EP0216523A3 (de) * 1985-08-27 1989-04-05 Resonex, Inc. Verfahren zur nichtorthogonalen Bilderzeugung mittels magnetischer Kernresonanz
US4713615A (en) * 1985-08-30 1987-12-15 Resonex, Inc. Quantization error reduction method for phase encode gradient in NMR imaging
US4698591A (en) * 1986-01-03 1987-10-06 General Electric Company Method for magnetic field gradient eddy current compensation
US4733189A (en) * 1986-06-03 1988-03-22 Massachusetts Institute Of Technology Magnetic resonance imaging systems
JPS63229039A (ja) * 1987-03-18 1988-09-22 株式会社東芝 磁気共鳴イメ−ジング装置
NL8701948A (nl) * 1987-08-19 1989-03-16 Philips Nv Magnetisch resonantie-apparaat met verbeterd gradient spoelenstelsel.
DE3730148A1 (de) * 1987-09-09 1989-03-30 Bruker Medizintech Verfahren zum erzeugen von spin-echo-impulsfolgen mit einem kernspin-tomographen und zur durchfuehrung des verfahrens ausgebildeter kernspin-tomograph
US4928063A (en) * 1987-11-09 1990-05-22 Picker International, Inc. Automatic eddy current correction
US4881035A (en) * 1987-11-24 1989-11-14 Siemens Aktiengesellschaft Magnetic structural arrangement of an installation for nuclear magnetic resonance tomography with superconducting background field coils and normal-conducting gradient coils
US4950994A (en) * 1988-03-07 1990-08-21 General Electric Company Gradient and polarizing field compensation
GB8818087D0 (en) * 1988-07-29 1988-09-01 Univ Southampton Improvements in/relating to attenuation of electro-magnetic field components
NL8802212A (nl) * 1988-09-08 1990-04-02 Philips Nv Werkwijze en inrichting voor wervelstroomcompensatie in mr apparaten.
DE3938167A1 (de) * 1988-11-28 1990-05-31 Siemens Ag Gradientenspulen-system fuer einen kernspintomographen
JPH02264636A (ja) * 1988-12-23 1990-10-29 Picker Internatl Ltd 核磁気共鳴方法
US4965521A (en) * 1989-08-11 1990-10-23 Spectroscopy Imaging Systems Method and apparatus for compensating eddy current effects in a magnetic resonance device having pulsed magnetic field gradients
US5313945A (en) * 1989-09-18 1994-05-24 Noise Cancellation Technologies, Inc. Active attenuation system for medical patients
JPH03173531A (ja) * 1989-12-01 1991-07-26 Hitachi Ltd 磁気共鳴イメージング装置の渦電流補償方法及び渦電流補償装置
JPH05509009A (ja) * 1990-06-13 1993-12-16 アドバンスト　エヌエムアール　システムズ，インク． 磁気共鳴イメージングシステムの磁界発生コイルの駆動回路
DE4020213C2 (de) * 1990-06-25 1993-10-07 Siemens Ag Stromversorgung für eine Gradientenspule eines Kernresonanz-Abbildungssystems
DE59108295D1 (de) * 1990-09-20 1996-11-28 Siemens Ag Kernspintomograph
EP0533173B1 (de) * 1991-09-19 1996-11-20 Kabushiki Kaisha Toshiba Verfahren und Apparat zur Bilderzeugung mittels magnetischer Resonanz mit der Möglichkeit der Kompensation von durch Wirbelströme gestörten Gradientenfeldern
GB9200812D0 (en) * 1992-01-15 1992-03-11 Oxford Instr Uk Ltd Gradient field control
US5530356A (en) * 1992-07-20 1996-06-25 Kabushiki Kaisha Toshiba Method and apparatus for generating magnetic fields for nuclear magnetic resonance imaging with cross-talk compensation
DE4313392C2 (de) * 1993-04-23 1995-06-22 Siemens Ag Verfahren zur Kompensation von durch Gradienten verursachten Wirbelströmen bei Kernspinresonanzgeräten
US5929638A (en) * 1996-08-07 1999-07-27 U.S. Philips Corporation MR method and device for carrying out the method
WO1999028757A1 (en) * 1997-11-28 1999-06-10 Koninklijke Philips Electronics N.V. Magnetic resonance apparatus provided with force-optimized gradient coils
US6127826A (en) * 1999-01-27 2000-10-03 Picker International, Inc. EPI image based long term eddy current pre-emphasis calibration
DE19947360C1 (de) 1999-10-01 2001-05-03 Siemens Ag Verfahren zur Vorgabe einer Sollgröße für ein Gradientenfeld
JP2002253532A (ja) 2000-12-21 2002-09-10 Siemens Ag 磁気共鳴装置
DE10109543B4 (de) 2001-02-28 2006-03-30 Siemens Ag Verfahren zum Betrieb eines Gradientenspulensystems eines Magnetresonanzgeräts
DE10200861A1 (de) * 2002-01-11 2003-07-31 Siemens Ag Magnetresonanzgerät mit einem Wirbelstromerzeuger
GB2400671B (en) * 2003-02-12 2006-05-10 Siemens Ag Magnetic resonance apparatus with a coil arrangement and an electrically conducting structure
DE10306017A1 (de) * 2003-02-13 2004-09-09 Siemens Ag Verfahren zum Ermitteln einer Kompensationseinstellung für ein Wirbelstromfeld
DE102006001194B4 (de) * 2006-01-10 2008-12-11 Bruker Biospin Gmbh Verfahren zur Ansteuerung eines Netzgeräts einer Magnetspule mittels automatischer digitaler Preemphasis für dynamische NMR-Magnetfelder durch digitale IIR-Filter
CN101256221B (zh) * 2007-02-28 2010-09-29 西门子（中国）有限公司 一种减小梯度磁场导致的涡流的方法
DE102010035539B4 (de) * 2010-08-26 2012-04-05 Siemens Aktiengesellschaft Verfahren zur Kompensation von Wirbelstromfeldern in Magnetresonanzaufnahmen und Magnetresonanzeinrichtung
JP2012183233A (ja) 2011-03-07 2012-09-27 Toshiba Corp 磁気共鳴イメージング装置
US9279871B2 (en) 2011-12-20 2016-03-08 General Electric Company System and apparatus for compensating for magnetic field distortion in an MRI system
US9322892B2 (en) 2011-12-20 2016-04-26 General Electric Company System for magnetic field distortion compensation and method of making same
US9274188B2 (en) 2012-11-30 2016-03-01 General Electric Company System and apparatus for compensating for magnetic field distortion in an MRI system
CN204394510U (zh) * 2015-01-06 2015-06-17 西门子(深圳)磁共振有限公司 梯度线圈的检测装置和磁共振成像系统
KR101734998B1 (ko) * 2015-08-31 2017-05-12 삼성전자주식회사 자기공명영상장치 및 그 제어방법
DE102017213026A1 (de) * 2017-07-28 2019-01-31 Siemens Healthcare Gmbh Gradientenspule zur Erzeugung eines Magnetfeldgradienten und eines Magnetfeldes höherer Ordnung
DE102019215046B4 (de) * 2019-09-30 2023-09-21 Siemens Healthcare Gmbh Verfahren zur Kompensation von Wirbelströmen bei einer Erfassung von Messdaten mittels Magnetresonanz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442404A (en) * 1978-12-19 1984-04-10 Bergmann Wilfried H Method and means for the noninvasive, local, in-vivo examination of endogeneous tissue, organs, bones, nerves and circulating blood on account of spin-echo techniques
DE3123493A1 (de) * 1981-06-13 1982-12-30 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
US4456881A (en) * 1982-01-18 1984-06-26 Technicare Corporation Gradient-coil apparatus for a magnetic resonance system
US4607225A (en) * 1983-07-19 1986-08-19 Regents Of The University Of California Apparatus and method for reducing spurious currents in NMR imaging apparatus induced by pulsed gradient fields

Also Published As

Publication number Publication date
ATE39575T1 (de) 1989-01-15
EP0164199A1 (de) 1985-12-11
US4585995A (en) 1986-04-29
EP0164199B1 (de) 1988-12-28

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: SIEMENS AG, 8000 MUENCHEN, DE

8365 Fully valid after opposition proceedings
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee