IL109844A - Apparatus for and a method of acoustic and magnetic screening - Google Patents

Apparatus for and a method of acoustic and magnetic screening

Info

Publication number
IL109844A
IL109844A IL10984494A IL10984494A IL109844A IL 109844 A IL109844 A IL 109844A IL 10984494 A IL10984494 A IL 10984494A IL 10984494 A IL10984494 A IL 10984494A IL 109844 A IL109844 A IL 109844A
Authority
IL
Israel
Prior art keywords
coil
coils
arrangement
current
acoustic
Prior art date
Application number
IL10984494A
Other languages
English (en)
Other versions
IL109844A0 (en
Original Assignee
British Tech Group
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 British Tech Group filed Critical British Tech Group
Publication of IL109844A0 publication Critical patent/IL109844A0/xx
Publication of IL109844A publication Critical patent/IL109844A/en

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
    • G01R33/42—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
    • G01R33/38—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
    • G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
    • 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)
  • Magnetic Resonance Imaging Apparatus (AREA)
IL10984494A 1993-06-02 1994-06-01 Apparatus for and a method of acoustic and magnetic screening IL109844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939311321A GB9311321D0 (en) 1993-06-02 1993-06-02 Apparatus for and methods of acoustic and magnetic screening

Publications (2)

Publication Number Publication Date
IL109844A0 IL109844A0 (en) 1994-10-07
IL109844A true IL109844A (en) 1996-12-05

Family

ID=10736467

Family Applications (1)

Application Number Title Priority Date Filing Date
IL10984494A IL109844A (en) 1993-06-02 1994-06-01 Apparatus for and a method of acoustic and magnetic screening

Country Status (9)

Country Link
US (1) US5764059A (fr)
EP (1) EP0701700B1 (fr)
JP (1) JP3748883B2 (fr)
CN (1) CN1127041A (fr)
DE (1) DE69428991T2 (fr)
FI (1) FI114415B (fr)
GB (2) GB9311321D0 (fr)
IL (1) IL109844A (fr)
WO (1) WO1994028430A1 (fr)

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US5581185A (en) * 1994-03-15 1996-12-03 Picker International, Inc. Torque-balanced gradient coils for magnetic resonance imaging
GB9506829D0 (en) * 1995-04-01 1995-05-24 Mansfield Peter Active acoustic screening for quiet gradient coils in mri
US5561371A (en) * 1995-09-27 1996-10-01 General Electric Company Transverse gradient coil
DE19612478C1 (de) * 1996-03-29 1997-09-04 Siemens Ag Gradientenspulensystem für ein diagnostisches Magnetresonanzgerät
US5942898A (en) * 1996-12-13 1999-08-24 Picker International, Inc. Thrust balanced bi-planar gradient set for MRI scanners
WO1999028757A1 (fr) * 1997-11-28 1999-06-10 Koninklijke Philips Electronics N.V. Appareil a resonance magnetique dote de bobines a gradient optimise par rapport a la force
DE19910018C1 (de) * 1999-03-08 2000-10-19 Siemens Ag Verfahren zum Betrieb eines Magnetresonanztomographiegeräts
US6462547B1 (en) * 1999-03-08 2002-10-08 Siemens Aktiengesellschaft Magnetic resonance tomography apparatus having a gradient coil system with a structural design wherein a scalar product of a natural oscillation mode and Lorentz forces is minimized toward zero
GB9923648D0 (en) * 1999-10-07 1999-12-08 Magnex Scient Limited Acoustic liner
GB2355799B (en) * 1999-10-26 2004-02-04 Oxford Magnet Tech Magnet with improved access
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
US6567685B2 (en) * 2000-01-21 2003-05-20 Kabushiki Kaisha Toshiba Magnetic resonance imaging apparatus
GB0006356D0 (en) * 2000-03-17 2000-05-03 Mansfield Peter Active acoustic control in gradient coil design for MRI
DE10116623C1 (de) * 2001-04-03 2002-12-05 Bruker Biospin Gmbh Magnetresonanzapparatur mit Dämpfung innerer mechanischer Schwingungen
DE10120284C1 (de) * 2001-04-25 2003-01-02 Siemens Ag Gradientenspulensystem und Magnetresonanzgerät mit dem Gradientenspulensystem
US6765381B2 (en) * 2001-08-10 2004-07-20 Varian, Inc. Extended maxwell pair gradient coils
US20030069710A1 (en) * 2001-09-24 2003-04-10 Earl Geddes Method for quantifying the polar response of transducers
DE10147474C1 (de) 2001-09-26 2003-04-24 Siemens Ag Makro-Multilayer-Spule und Verfahren zur Herstellung der Makro-Multilayer-Spule
EP1440327B1 (fr) * 2001-11-01 2010-12-15 Peter Mansfield Bobines a gradient pour irm a stimulation neuronale reduite
DE10200861A1 (de) * 2002-01-11 2003-07-31 Siemens Ag Magnetresonanzgerät mit einem Wirbelstromerzeuger
GB0223684D0 (en) * 2002-10-10 2002-11-20 Tesla Engineering Ltd Gradient coil structure for magnetic resonace imaging
CN100434929C (zh) * 2002-11-15 2008-11-19 皇家飞利浦电子股份有限公司 具有使用平衡部件的梯度磁体系统的磁共振成像系统
DE10310356A1 (de) * 2003-03-10 2004-10-07 Siemens Ag Magnetresonanzgerät mit einem Grundfeldmagneten und wenigstens einer Gradientenspulen
US7068033B2 (en) * 2003-08-18 2006-06-27 Ge Medical Systems Global Technology Company, Llc Acoustically damped gradient coil
CN1886671A (zh) * 2003-11-25 2006-12-27 皇家飞利浦电子股份有限公司 包括附加涡流屏蔽系统的有源屏蔽梯度线圈系统
US20050127913A1 (en) * 2003-12-12 2005-06-16 Seth Berger Lc coil
FR2892523B1 (fr) * 2005-10-26 2008-02-22 Commissariat Energie Atomique Machine de rmn a compensation des courants de foucault.
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
DE102007016314B3 (de) * 2007-04-04 2009-01-02 Siemens Ag Lokalspulenanordnung zum Aufsetzen auf eine Patientenliege und Patientenliege zur Aufnahme einer Lokalspulenanordnung sowie Magnetresonanzgerät mit einer Patientenliege
WO2011122929A1 (fr) * 2010-03-30 2011-10-06 Sang Boon Lam Dispositif et procédé d'amélioration de l'électricité
EP2388610A1 (fr) 2010-05-20 2011-11-23 Koninklijke Philips Electronics N.V. Bobine de gradient imagerie à résonance magnétique, ensemble d'aimant et système
JP2012115456A (ja) * 2010-11-30 2012-06-21 Toshiba Corp 磁気共鳴イメージング装置
US8766635B2 (en) * 2011-06-30 2014-07-01 General Electric Company System and apparatus for balancing radial forces in a gradient coil
BR112014008363A2 (pt) * 2011-11-07 2017-04-18 Landmark Graphics Corp método e sistema de geração de imagem sísmica
US10527694B2 (en) 2015-11-12 2020-01-07 General Electric Company Magnetic resonance imaging system and an associated method thereof
CN106291421B (zh) * 2016-09-23 2023-06-30 山东大学 适用于台阶法施工中核磁共振超前地质预报的发射线圈
GB2594686B (en) * 2020-02-28 2023-11-29 Tesla Dynamic Coils BV MRI apparatus
CN112700942A (zh) * 2020-12-16 2021-04-23 苏州大学 电磁场平台及具有其的控制系统
JP7693382B2 (ja) * 2021-04-30 2025-06-17 テスラ ダイナミック コイルズ ベーフェー Ｍｒｉ装置
JP2024098334A (ja) * 2023-01-10 2024-07-23 キヤノンメディカルシステムズ株式会社 静磁場磁石及び磁気共鳴イメージング装置

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US4680545A (en) * 1985-01-04 1987-07-14 General Electric Company Method for reduction of acoustical noise generated by magnetic field gradient pulses
NL8701947A (nl) * 1987-08-19 1989-03-16 Philips Nv Magnetisch resonantie apparaat met geluidsarme gradientspoel.
JPH01303140A (ja) * 1988-06-01 1989-12-07 Hitachi Ltd 核磁気共鳴診断装置
US5084676A (en) * 1988-12-23 1992-01-28 Hitachi, Ltd. Nuclear magnetic resonance apparatus
JPH0334404A (ja) * 1989-06-30 1991-02-14 Mitsubishi Electric Corp 極低温冷凍装置
DE4029477C2 (de) * 1989-09-29 1994-06-01 Siemens Ag Tesserale Gradientenspule für Kernspin-Tomographiegeräte
US5481191A (en) * 1990-06-29 1996-01-02 Advanced Nmr Systems, Inc. Shielded gradient coil for nuclear magnetic resonance imaging
US5243286A (en) * 1990-06-06 1993-09-07 Advanced Nmr Systems, Inc. Split shield for magnetic resonance imaging
JPH0479936A (ja) * 1990-07-23 1992-03-13 Shimadzu Corp 傾斜磁場発生装置
US5235283A (en) * 1991-02-07 1993-08-10 Siemens Aktiengesellschaft Gradient coil system for a nuclear magnetic resonance tomography apparatus which reduces acoustic noise
DE4141514C2 (de) * 1991-02-07 1997-04-10 Siemens Ag Gradientenspulensystem für ein Kernspin-Tomographiegerät
JP3161008B2 (ja) * 1992-03-18 2001-04-25 株式会社日立製作所 磁気共鳴イメージング装置
US5554929A (en) * 1993-03-12 1996-09-10 Doty Scientific, Inc. Crescent gradient coils
FR2704322B1 (fr) * 1993-04-20 1995-05-24 Gec Alsthom Electromec Système de bobines de gradient transverse pour appareil de résonance magnétique nucléaire.
EP0874389B1 (fr) * 1997-04-21 2007-08-01 STMicroelectronics S.r.l. Méthode de fabrication de transistors MOSFET à l'aide d'implantations inclinées

Also Published As

Publication number Publication date
IL109844A0 (en) 1994-10-07
FI114415B (fi) 2004-10-15
US5764059A (en) 1998-06-09
DE69428991T2 (de) 2002-04-04
FI955808A0 (fi) 1995-12-01
WO1994028430A1 (fr) 1994-12-08
FI955808A7 (fi) 1996-01-31
CN1127041A (zh) 1996-07-17
GB9522805D0 (en) 1996-01-10
JP3748883B2 (ja) 2006-02-22
GB2293454A (en) 1996-03-27
EP0701700A1 (fr) 1996-03-20
GB9311321D0 (en) 1993-07-21
JPH08510659A (ja) 1996-11-12
DE69428991D1 (de) 2001-12-13
EP0701700B1 (fr) 2001-11-07

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