DE69231645T2 - Methode zum Entwurf einer magnetisch abgeschirmten elektromagnetischen Spulenanordnung - Google Patents

Methode zum Entwurf einer magnetisch abgeschirmten elektromagnetischen Spulenanordnung

Info

Publication number
DE69231645T2
DE69231645T2 DE69231645T DE69231645T DE69231645T2 DE 69231645 T2 DE69231645 T2 DE 69231645T2 DE 69231645 T DE69231645 T DE 69231645T DE 69231645 T DE69231645 T DE 69231645T DE 69231645 T2 DE69231645 T2 DE 69231645T2
Authority
DE
Germany
Prior art keywords
coil
field
screen
gradient
designing
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
DE69231645T
Other languages
English (en)
Other versions
DE69231645D1 (de
Inventor
Barry L W Chapman
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.)
BTG International Inc
Original Assignee
BTG International 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 BTG International Inc filed Critical BTG International Inc
Application granted granted Critical
Publication of DE69231645D1 publication Critical patent/DE69231645D1/de
Publication of DE69231645T2 publication Critical patent/DE69231645T2/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
    • G01R33/42—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)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Testing Of Coins (AREA)
  • Lasers (AREA)
  • Magnetically Actuated Valves (AREA)
DE69231645T 1991-08-27 1992-08-24 Methode zum Entwurf einer magnetisch abgeschirmten elektromagnetischen Spulenanordnung Expired - Fee Related DE69231645T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/750,809 US5266913A (en) 1991-08-27 1991-08-27 Screened electromagnetic coil of restricted length having optimized field and method
PCT/US1992/007354 WO1993004493A1 (en) 1991-08-27 1992-08-24 Screened electromagnetic coil of restricted length having optimized field and method

Publications (2)

Publication Number Publication Date
DE69231645D1 DE69231645D1 (de) 2001-02-22
DE69231645T2 true DE69231645T2 (de) 2001-06-13

Family

ID=25019254

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69231645T Expired - Fee Related DE69231645T2 (de) 1991-08-27 1992-08-24 Methode zum Entwurf einer magnetisch abgeschirmten elektromagnetischen Spulenanordnung

Country Status (8)

Country Link
US (1) US5266913A (de)
EP (1) EP0601101B1 (de)
JP (1) JP2997061B2 (de)
AT (1) ATE198798T1 (de)
AU (1) AU658348B2 (de)
CA (1) CA2115577C (de)
DE (1) DE69231645T2 (de)
WO (1) WO1993004493A1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210217C2 (de) * 1992-03-28 1994-03-24 Bruker Analytische Messtechnik Verfahren zum Bau einer optimierten Magnetspulenanordnung
FR2704322B1 (fr) * 1993-04-20 1995-05-24 Gec Alsthom Electromec Système de bobines de gradient transverse pour appareil de résonance magnétique nucléaire.
US5545996A (en) * 1994-03-15 1996-08-13 Picker International, Inc. Gradient coil with cancelled net thrust force
GB2295020B (en) * 1994-11-03 1999-05-19 Elscint Ltd Modular whole - body gradient coil
US5663648A (en) * 1995-03-17 1997-09-02 British Technology Group Usa, Inc. Gradient coils having increased performance and decreased power consumption for use in MR systems
US6100692A (en) * 1998-01-05 2000-08-08 Picker International, Inc. Gradient coil set with a finite shield current
US6078177A (en) * 1998-01-05 2000-06-20 Picker International, Inc. Flared gradient coil set with a finite shield current
US6236203B1 (en) * 1998-09-28 2001-05-22 Picker International, Inc. Super shielding of finite length structures in open magnetic and electric systems
GB9924833D0 (en) * 1999-10-20 1999-12-22 Btg Int Ltd Permanent magnet and shim design
JP3967505B2 (ja) * 1999-12-07 2007-08-29 日本電子株式会社 磁場補正コイルの設計方法
JP4421079B2 (ja) * 2000-05-23 2010-02-24 株式会社東芝 Ｍｒｉ用傾斜磁場コイル
CN1714300A (zh) 2002-11-20 2005-12-28 皇家飞利浦电子股份有限公司 用于磁共振成像的自屏蔽梯度场线圈
US7196603B2 (en) * 2003-04-18 2007-03-27 Board Of Regents, The University Of Texas System Magnetic coil design using optimization of sinusoidal coefficients
US7378849B2 (en) * 2003-10-07 2008-05-27 Sra International, Inc. Method and apparatus for obtaining spatial information and measuring the dielectric constant of an object
KR100635885B1 (ko) * 2004-12-14 2006-10-18 한국기초과학지원연구원 고균등 고자장 발생용 초전도 자석의 설계방법
US7382133B1 (en) 2005-04-29 2008-06-03 Fonar Corporation Self-shielded gradients and method of designing and producing self-shielded gradients
ES2709035T3 (es) * 2012-11-26 2019-04-12 Thorlabs Inc Obturador biestable controlado electromagnéticamente
US9726741B1 (en) 2013-03-10 2017-08-08 Fonar Corporation Magnetic resonance imaging
US9575152B1 (en) * 2013-03-10 2017-02-21 Fonar Corporation Magnetic resonance imaging
GB2534337B (en) * 2014-09-29 2017-10-18 Iphase Ltd Method and apparatus for monitoring of the multiphase flow in a pipe
US10585154B1 (en) 2018-01-29 2020-03-10 Quantum Valley Investment Fund LP Nuclear magnetic resonance diffraction
CN114974791B (zh) * 2022-07-29 2022-11-01 华中科技大学 一种超导磁体被动抵消式外磁屏蔽线圈的优化方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI88079C (fi) * 1983-11-02 1993-03-25 Gen Electric Tvaer gradientspole, speciellt en spole foer bruk i nukleaera magnetiska resonansavbildningssystem
EP0365065B1 (de) * 1985-09-20 2003-03-12 Btg International Limited Magnetfeldschirme
US4737716A (en) * 1986-02-06 1988-04-12 General Electric Company Self-shielded gradient coils for nuclear magnetic resonance imaging
GB8615674D0 (en) * 1986-06-26 1986-07-30 Mansfield P Electrical coils
GB8615854D0 (en) * 1986-06-28 1986-08-06 Turner R Magnetic field coils
GB8712074D0 (en) * 1987-05-21 1987-06-24 Tioxide Group Plc Drying process
US4794338A (en) * 1987-11-25 1988-12-27 General Electric Company Balanced self-shielded gradient coils
US4853663A (en) * 1988-12-22 1989-08-01 General Electric Company Passive shims for correction of (3,2) and (3,-2) harmonic terms in magnetic resonance magnets

Also Published As

Publication number Publication date
WO1993004493A1 (en) 1993-03-04
EP0601101A4 (en) 1994-07-27
JP2997061B2 (ja) 2000-01-11
EP0601101B1 (de) 2001-01-17
CA2115577A1 (en) 1993-03-04
US5266913A (en) 1993-11-30
ATE198798T1 (de) 2001-02-15
EP0601101A1 (de) 1994-06-15
DE69231645D1 (de) 2001-02-22
AU658348B2 (en) 1995-04-06
AU2557692A (en) 1993-03-16
JPH07500223A (ja) 1995-01-05
CA2115577C (en) 2002-07-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee