DE69428991D1 - Akustische abschirmung - Google Patents
Akustische abschirmungInfo
- Publication number
- DE69428991D1 DE69428991D1 DE69428991T DE69428991T DE69428991D1 DE 69428991 D1 DE69428991 D1 DE 69428991D1 DE 69428991 T DE69428991 T DE 69428991T DE 69428991 T DE69428991 T DE 69428991T DE 69428991 D1 DE69428991 D1 DE 69428991D1
- Authority
- DE
- Germany
- Prior art keywords
- acoustic shielding
- acoustic
- shielding
- 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
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)
Applications Claiming Priority (2)
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 |
PCT/GB1994/001187 WO1994028430A1 (en) | 1993-06-02 | 1994-06-01 | An acoustic screen |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69428991D1 true DE69428991D1 (de) | 2001-12-13 |
DE69428991T2 DE69428991T2 (de) | 2002-04-04 |
Family
ID=10736467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69428991T Expired - Fee Related DE69428991T2 (de) | 1993-06-02 | 1994-06-01 | Akustische abschirmung |
Country Status (9)
Country | Link |
---|---|
US (1) | US5764059A (de) |
EP (1) | EP0701700B1 (de) |
JP (1) | JP3748883B2 (de) |
CN (1) | CN1127041A (de) |
DE (1) | DE69428991T2 (de) |
FI (1) | FI114415B (de) |
GB (2) | GB9311321D0 (de) |
IL (1) | IL109844A (de) |
WO (1) | WO1994028430A1 (de) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5581185A (en) * | 1994-03-15 | 1996-12-03 | Picker International, Inc. | Torque-balanced gradient coils for magnetic resonance imaging |
US5545996A (en) * | 1994-03-15 | 1996-08-13 | Picker International, Inc. | Gradient coil with cancelled net thrust force |
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 |
JP2001509726A (ja) * | 1997-11-28 | 2001-07-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 力を最適化された傾斜コイルを備えた磁気共鳴装置 |
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 |
DE19910018C1 (de) * | 1999-03-08 | 2000-10-19 | Siemens Ag | Verfahren zum Betrieb eines Magnetresonanztomographiegeräts |
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 |
US6954068B1 (en) | 2000-01-21 | 2005-10-11 | Kabushiki Kaisha Toshiba | Magnetic resonance imaging apparatus |
US6556012B2 (en) | 2000-01-21 | 2003-04-29 | 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 |
US7565189B2 (en) * | 2001-11-01 | 2009-07-21 | Peter Mansfield | MRI gradient coils with reduced neural stimulation |
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 |
AU2003274486A1 (en) * | 2002-11-15 | 2004-06-15 | Koninklijke Philips Electronics N.V. | Mri system having a gradient magnet system with a balance member |
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 |
US20080315878A1 (en) * | 2003-11-25 | 2008-12-25 | Koninklijke Philips Electronics Nv | Actively Shielded Gradient Coil System Comprising Additional Additional Eddy Current Shield System |
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 (en) * | 2010-03-30 | 2011-10-06 | Sang Boon Lam | Device and method of improving electricity |
EP2388610A1 (de) | 2010-05-20 | 2011-11-23 | Koninklijke Philips Electronics N.V. | Magnetresonanzbildgebungsgradientenspule, Magnetanordnung und System |
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 |
CA2850298C (en) * | 2011-11-07 | 2018-03-20 | Landmark Graphics Corporation | Seismic imaging systems and methods employing correlation-based stacking |
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 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE4141514C2 (de) * | 1991-02-07 | 1997-04-10 | Siemens Ag | Gradientenspulensystem für ein Kernspin-Tomographiegerät |
US5235283A (en) * | 1991-02-07 | 1993-08-10 | Siemens Aktiengesellschaft | Gradient coil system for a nuclear magnetic resonance tomography apparatus which reduces acoustic noise |
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. |
DE69737966D1 (de) * | 1997-04-21 | 2007-09-13 | St Microelectronics Srl | Ein Verfahren zur Herstellung von MOSFET-Transistoren mittels geneigten Implantierungen |
-
1993
- 1993-06-02 GB GB939311321A patent/GB9311321D0/en active Pending
-
1994
- 1994-06-01 EP EP94916340A patent/EP0701700B1/de not_active Expired - Lifetime
- 1994-06-01 DE DE69428991T patent/DE69428991T2/de not_active Expired - Fee Related
- 1994-06-01 JP JP50042395A patent/JP3748883B2/ja not_active Expired - Fee Related
- 1994-06-01 IL IL10984494A patent/IL109844A/en not_active IP Right Cessation
- 1994-06-01 GB GB9522805A patent/GB2293454A/en not_active Withdrawn
- 1994-06-01 US US08/556,941 patent/US5764059A/en not_active Expired - Fee Related
- 1994-06-01 CN CN94192781A patent/CN1127041A/zh active Pending
- 1994-06-01 WO PCT/GB1994/001187 patent/WO1994028430A1/en active IP Right Grant
-
1995
- 1995-12-01 FI FI955808A patent/FI114415B/fi active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN1127041A (zh) | 1996-07-17 |
IL109844A0 (en) | 1994-10-07 |
GB9311321D0 (en) | 1993-07-21 |
EP0701700B1 (de) | 2001-11-07 |
US5764059A (en) | 1998-06-09 |
GB9522805D0 (en) | 1996-01-10 |
JPH08510659A (ja) | 1996-11-12 |
DE69428991T2 (de) | 2002-04-04 |
GB2293454A (en) | 1996-03-27 |
JP3748883B2 (ja) | 2006-02-22 |
FI955808A (fi) | 1996-01-31 |
IL109844A (en) | 1996-12-05 |
EP0701700A1 (de) | 1996-03-20 |
FI114415B (fi) | 2004-10-15 |
FI955808A0 (fi) | 1995-12-01 |
WO1994028430A1 (en) | 1994-12-08 |
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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 |