DE3481247D1 - Magnetanordnung. - Google Patents
Magnetanordnung.Info
- Publication number
- DE3481247D1 DE3481247D1 DE8484307735T DE3481247T DE3481247D1 DE 3481247 D1 DE3481247 D1 DE 3481247D1 DE 8484307735 T DE8484307735 T DE 8484307735T DE 3481247 T DE3481247 T DE 3481247T DE 3481247 D1 DE3481247 D1 DE 3481247D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic arrangement
- magnetic
- arrangement
- 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 - Lifetime
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
- G01R33/381—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
- G01R33/387—Compensation of inhomogeneities
- G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/825—Apparatus per se, device per se, or process of making or operating same
- Y10S505/879—Magnet or electromagnet
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838330198A GB8330198D0 (en) | 1983-11-11 | 1983-11-11 | Magnet assembly |
GB848400684A GB8400684D0 (en) | 1984-01-11 | 1984-01-11 | Shielded magnet system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3481247D1 true DE3481247D1 (de) | 1990-03-08 |
Family
ID=26286998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484307735T Expired - Lifetime DE3481247D1 (de) | 1983-11-11 | 1984-11-09 | Magnetanordnung. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4587504A (de) |
EP (2) | EP0251342A3 (de) |
JP (1) | JPH0564634A (de) |
DE (1) | DE3481247D1 (de) |
Families Citing this family (74)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60229311A (ja) * | 1984-04-26 | 1985-11-14 | Yokogawa Hokushin Electric Corp | 磁場発生用コイル |
GB8410972D0 (en) * | 1984-04-30 | 1984-06-06 | Oxford Magnet Tech | Magnet assembly |
AU579530B2 (en) * | 1984-07-06 | 1988-11-24 | Board Of Trustees Of The Leland Stanford Junior University | Magnetic structure for NMR applications and the like |
GB2162641B (en) * | 1984-07-11 | 1989-05-17 | Magnex Scient Limited | Nuclear magnetic resonance |
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 |
DE3764502D1 (de) * | 1986-03-19 | 1990-10-04 | Siemens Ag | Grundfeldmagnet fuer bildgebende einrichtungen der kernspinresonanz-technik. |
US4853588A (en) * | 1986-09-05 | 1989-08-01 | Denki Onkyo Co., Ltd. | Deflection yoke apparatus with means for reducing unwanted radiation |
DE3732660A1 (de) * | 1986-09-29 | 1988-04-07 | Toshiba Kawasaki Kk | Magnetresonanz-abbildungssystem |
FR2606624A1 (fr) * | 1986-11-14 | 1988-05-20 | Thomson Cgr | Installation d'imagerie par resonance magnetique nucleaire |
GB8701363D0 (en) * | 1987-01-22 | 1987-02-25 | Oxford Instr Ltd | Magnetic field generating assembly |
US4771256A (en) * | 1987-04-02 | 1988-09-13 | General Electric Company | Integral shield for mr magnet |
US4837541A (en) * | 1987-04-02 | 1989-06-06 | General Electric Company | Shield suspension system for a magnetic resonance cryostat |
US4800354A (en) * | 1987-04-02 | 1989-01-24 | General Electric Company | Superconducting magnetic resonance magnet and method of making same |
JPS63284805A (ja) * | 1987-05-18 | 1988-11-22 | Mitsubishi Electric Corp | 超電導電磁石装置 |
US4876510A (en) * | 1987-06-04 | 1989-10-24 | Siemens Aktiengesellschaft | Apparatus for nuclear spin tomography having superconducting base field magnetic coils and a radiation shield |
IL82950A (en) * | 1987-06-22 | 1990-12-23 | Elscint Ltd | Superconducting magnet with separate support system |
US4868707A (en) * | 1987-06-23 | 1989-09-19 | Mitsubishi Denki Kabushiki Kaisha | Superconducting electromagnet apparatus |
US4768008A (en) * | 1987-07-31 | 1988-08-30 | General Atomics | MRI magnet system with vessel having composite first wall |
JPS6454714A (en) * | 1987-08-26 | 1989-03-02 | Hitachi Ltd | Active shield type superconducting magnet device |
JPS6458247A (en) * | 1987-08-29 | 1989-03-06 | Fuji Electric Co Ltd | Uniform magnetic field coil |
US4743880A (en) * | 1987-09-28 | 1988-05-10 | Ga Technologies Inc. | MRI magnet system having shield and method of manufacture |
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 |
US4794338A (en) * | 1987-11-25 | 1988-12-27 | General Electric Company | Balanced self-shielded gradient coils |
JP2643384B2 (ja) * | 1988-02-03 | 1997-08-20 | 富士電機株式会社 | 超電導マグネット |
JPH01227407A (ja) * | 1988-03-08 | 1989-09-11 | Toshiba Corp | 磁気共鳴イメージング装置用磁石 |
US4935714A (en) * | 1988-07-05 | 1990-06-19 | General Electric Company | Low thermal conductance support for a radiation shield in a MR magnet |
JPH0687447B2 (ja) * | 1988-07-27 | 1994-11-02 | 三菱電機株式会社 | 超電導マグネツト装置 |
DE3891385T1 (de) * | 1988-09-08 | 1990-08-30 | Mitsubishi Electric Corp | Supraleitende magnetvorrichtung |
US5136273A (en) * | 1988-10-17 | 1992-08-04 | Kabushiki Kaisha Toshiba | Magnet apparatus for use in a magnetic resonance imaging system |
IL90050A (en) * | 1989-04-23 | 1992-07-15 | Elscint Ltd | Integrated active shielded magnet system |
DE3914243A1 (de) * | 1989-04-29 | 1990-10-31 | Bruker Analytische Messtechnik | Magnetsystem mit supraleitenden feldspulen |
US5289128A (en) * | 1992-03-27 | 1994-02-22 | Picker International, Inc. | Superconducting gradient shield coils |
DE59108310D1 (de) * | 1990-05-31 | 1996-12-05 | Siemens Ag | Aktiv geschirmter Magnet |
NL9001300A (nl) * | 1990-06-08 | 1992-01-02 | Koninkl Philips Electronics Nv | Magneetstelsel voor magnetische resonantie. |
GB9016183D0 (en) * | 1990-07-24 | 1990-09-05 | Oxford Magnet Tech | Magnet assembly |
GB9016184D0 (en) * | 1990-07-24 | 1990-09-05 | Oxford Magnet Tech | Magnet assembly |
JPH04105307A (ja) * | 1990-08-24 | 1992-04-07 | Mitsubishi Electric Corp | 超電導マグネット装置 |
NL9002621A (nl) * | 1990-11-30 | 1992-06-16 | Koninkl Philips Electronics Nv | Magnetisch resonantie apparaat met afschermende magneet. |
JPH04240440A (ja) * | 1991-01-23 | 1992-08-27 | Toshiba Corp | Mri装置用マグネット |
US5123679A (en) * | 1991-03-01 | 1992-06-23 | Westinghouse Electric Corp. | Connection together of pipes by breakable welded joint |
JPH0669027A (ja) * | 1991-10-24 | 1994-03-11 | Hitachi Ltd | 磁場発生装置 |
US5406204A (en) * | 1992-03-27 | 1995-04-11 | Picker International, Inc. | Integrated MRI gradient coil and RF screen |
US5349297A (en) * | 1992-03-27 | 1994-09-20 | Picker International Inc. | Combined self shielded gradient coil and shimset |
US5382904A (en) * | 1992-04-15 | 1995-01-17 | Houston Advanced Research Center | Structured coil electromagnets for magnetic resonance imaging and method for fabricating the same |
US5426366A (en) * | 1992-12-11 | 1995-06-20 | U.S. Philips Corporation | Magnetic resonance apparatus comprising a superconducting magnet |
DE4344287C1 (de) * | 1993-12-23 | 1995-06-14 | Siemens Ag | Supraleitender Magnet mit aktiver Schirmung für Kernspintomographieanlagen |
US5532597A (en) * | 1994-11-04 | 1996-07-02 | Picker International, Inc. | Passive shimming technique for MRI magnets |
US5635839A (en) * | 1994-11-04 | 1997-06-03 | Picker International, Inc. | High order passive shimming assembly for MRI magnets |
GB2295672B (en) * | 1994-11-29 | 1999-05-12 | Oxford Magnet Tech | Improvements in or relating to cryogenic MRI magnets |
US5633587A (en) * | 1995-02-14 | 1997-05-27 | Kabushiki Kaisha Toshiba | Magnetostatic field generating magnet for use in an MRI system having an active magnetic shield |
US5550472A (en) * | 1995-04-13 | 1996-08-27 | Picker International, Inc. | Combined radio frequency coil with integral magnetic field shim set |
US5818319A (en) * | 1995-12-21 | 1998-10-06 | The University Of Queensland | Magnets for magnetic resonance systems |
DE69840444D1 (de) | 1997-05-23 | 2009-02-26 | Prorhythm Inc | Wegwerfbarer fokussierender ultraschallapplikator hoher intensität |
US6255822B1 (en) * | 1998-10-09 | 2001-07-03 | U.S. Philips Corporation | MRI apparatus having a short uniform field magnet with an internal space |
US6208142B1 (en) | 1998-12-07 | 2001-03-27 | Transurgical, Inc. | Magnetic resonance apparatus and methods with shim adjustment |
DE19940694C1 (de) * | 1999-08-27 | 2001-07-26 | Bruker Ag Faellanden | Aktiv abgeschirmte supraleitende Magnetanordnung mit Z·2·-Shim |
DE10046182C2 (de) * | 2000-09-19 | 2002-08-01 | Bruker Ag Faellanden | Magnetanordnung mit einem supraleitenden Magnetspulensystem und einer magnetischen Feldform-Vorrichtung sowie Verfahren zur Dimensionierung |
GB0121603D0 (en) * | 2001-09-06 | 2001-10-24 | Oxford Instr Superconductivity | Magnet assembly |
GB0222625D0 (en) * | 2002-09-30 | 2002-11-06 | Oxford Instr Plc | Magnet assembly |
JP4142011B2 (ja) | 2002-09-30 | 2008-08-27 | オックスフォード インストルメンツ パブリックリミテッド カンパニー | 磁場生成組立体及び方法 |
DE10354677B4 (de) * | 2003-11-22 | 2006-09-21 | Bruker Biospin Gmbh | Zusätzliche Streufeldabschirmung eines supraleitenden Magnetspulensystem |
US7019525B2 (en) * | 2004-01-06 | 2006-03-28 | Ge Medical Systems Glogal Technology Company, Llc | Method and apparatus for magnetic resonance imaging |
GB0403186D0 (en) * | 2004-02-12 | 2004-03-17 | Oxford Instr Plc | Magnetic resonance apparatus and method |
US20070063801A1 (en) * | 2005-09-16 | 2007-03-22 | Laskaris Evangelos T | System and method for magnetic resonance imaging |
DE102005047938B4 (de) | 2005-10-06 | 2022-01-27 | Bruker Biospin Gmbh | Supraleitendes Magnetspulensystem mit Quenchschutz |
DE102006040687A1 (de) * | 2006-08-30 | 2008-03-13 | Bruker Biospin Ag | Split Coil Magnetanordnung mit verbessertem mechanischem Aufbau |
DE102009004899B4 (de) | 2009-01-16 | 2015-09-24 | Siemens Aktiengesellschaft | Supraleitender aktiv geschirmter Magnet |
US8729899B2 (en) * | 2011-07-08 | 2014-05-20 | Kabushiki Kaisha Toshiba | MRI magnet and MRI system with optimized fringe fields, attractive forces and spatial constraints |
US10018692B2 (en) | 2013-11-20 | 2018-07-10 | Aspect Imaging Ltd. | Shutting assembly for closing an entrance of an MRI device |
US10386432B2 (en) | 2013-12-18 | 2019-08-20 | Aspect Imaging Ltd. | Radiofrequency shielding conduit in a door or a doorframe of a magnetic resonance imaging room |
JP6613466B2 (ja) * | 2014-10-28 | 2019-12-04 | 国立研究開発法人量子科学技術研究開発機構 | 荷電粒子ビーム照射装置 |
US11029378B2 (en) | 2016-12-14 | 2021-06-08 | Aspect Imaging Ltd. | Extendable radiofrequency shield for magnetic resonance imaging device |
US10401452B2 (en) * | 2017-04-28 | 2019-09-03 | Aspect Imaging Ltd. | System for reduction of a magnetic fringe field of a magnetic resonance imaging device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566255A (en) * | 1959-03-06 | 1971-02-23 | Varian Associates | Apparatus for improving the homogeneity of magnetic fields |
US3265939A (en) * | 1963-09-20 | 1966-08-09 | Nat Res Corp | Superconductive coil having a ferromagnetic layer thereon |
US3287630A (en) * | 1964-03-02 | 1966-11-22 | Varian Associates | Apparatus for improving the uniformity of magnetic fields |
FR1416691A (fr) * | 1964-11-19 | 1965-11-05 | Westinghouse Electric Corp | Dispositif de solénoïde supra-conducteur |
GB1285694A (en) * | 1968-09-10 | 1972-08-16 | Perkin Elmer Ltd | Flux stabilized magnets |
US3671902A (en) * | 1971-05-25 | 1972-06-20 | Gen Electric | Shielded inductive device |
DE2646467C3 (de) * | 1976-10-14 | 1979-04-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Supraleitende Spulenanordnung für Meozwecke |
DE2755357A1 (de) * | 1977-12-12 | 1979-06-13 | Euratom | Spule zur erzeugung von magnetfeldern hoher und extrem hoher homogenitaet |
US4362993A (en) * | 1979-08-10 | 1982-12-07 | Picker International Limited | Imaging systems |
GB2070254B (en) * | 1980-01-21 | 1984-10-17 | Oxford Instr Group Ltd | Nuclear magnetic resonance apparatus and methods |
JPS57180947A (en) * | 1981-04-30 | 1982-11-08 | Tokyo Shibaura Electric Co | Diagnostic nuclear magnetic resonance apparatus |
DE3123493A1 (de) * | 1981-06-13 | 1982-12-30 | Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten | Elektromagnet fuer die nmr-tomographie |
JPS58207608A (ja) * | 1982-05-28 | 1983-12-03 | Mitsubishi Electric Corp | 超電導マグネツト |
US4409579A (en) * | 1982-07-09 | 1983-10-11 | Clem John R | Superconducting magnetic shielding apparatus and method |
NL8303533A (nl) * | 1983-10-14 | 1985-05-01 | Koninkl Philips Electronics Nv | Kernspinresonantie apparaat. |
-
1984
- 1984-11-07 US US06/669,311 patent/US4587504A/en not_active Ceased
- 1984-11-09 DE DE8484307735T patent/DE3481247D1/de not_active Expired - Lifetime
- 1984-11-09 EP EP87111469A patent/EP0251342A3/de not_active Withdrawn
- 1984-11-09 EP EP84307735A patent/EP0144171B1/de not_active Expired - Lifetime
-
1991
- 1991-09-26 JP JP3318742A patent/JPH0564634A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4587504A (en) | 1986-05-06 |
EP0144171A1 (de) | 1985-06-12 |
EP0144171B1 (de) | 1990-01-31 |
EP0251342A2 (de) | 1988-01-07 |
EP0251342A3 (de) | 1988-11-17 |
JPH0564634A (ja) | 1993-03-19 |
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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: OXFORD INSTRUMENTS SUPERCONDUCTIVITY LTD., EYNSHAM |
|
8328 | Change in the person/name/address of the agent |
Representative=s name: SAMSON & PARTNER, PATENTANWAELTE, 80538 MUENCHEN |
|
8310 | Action for declaration of annulment |