DE69616635T2 - Ein Gerät für die magnetische Resonanz - Google Patents

Ein Gerät für die magnetische Resonanz

Info

Publication number
DE69616635T2
DE69616635T2 DE69616635T DE69616635T DE69616635T2 DE 69616635 T2 DE69616635 T2 DE 69616635T2 DE 69616635 T DE69616635 T DE 69616635T DE 69616635 T DE69616635 T DE 69616635T DE 69616635 T2 DE69616635 T2 DE 69616635T2
Authority
DE
Germany
Prior art keywords
magnetic resonance
resonance
magnetic
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
DE69616635T
Other languages
English (en)
Other versions
DE69616635D1 (de
Inventor
Mark A Richard
Michael A Morich
Labros S Petropoulos
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.)
Philips Nuclear Medicine Inc
Original Assignee
Marconi Medical Systems 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 Marconi Medical Systems Inc filed Critical Marconi Medical Systems Inc
Publication of DE69616635D1 publication Critical patent/DE69616635D1/de
Application granted granted Critical
Publication of DE69616635T2 publication Critical patent/DE69616635T2/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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
    • 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
    • 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
    • G01R33/422—Screening of the radio frequency field

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69616635T 1995-04-13 1996-03-19 Ein Gerät für die magnetische Resonanz Expired - Fee Related DE69616635T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/421,837 US5550472A (en) 1995-04-13 1995-04-13 Combined radio frequency coil with integral magnetic field shim set

Publications (2)

Publication Number Publication Date
DE69616635D1 DE69616635D1 (de) 2001-12-13
DE69616635T2 true DE69616635T2 (de) 2002-05-08

Family

ID=23672249

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69616635T Expired - Fee Related DE69616635T2 (de) 1995-04-13 1996-03-19 Ein Gerät für die magnetische Resonanz

Country Status (3)

Country Link
US (1) US5550472A (de)
EP (1) EP0737867B1 (de)
DE (1) DE69616635T2 (de)

Families Citing this family (40)

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US5786695A (en) * 1997-03-21 1998-07-28 Picker International, Inc. Shim tray with reduced heat conduction and forced cooling
US6023167A (en) * 1998-01-26 2000-02-08 Picker International, Inc. Surface coils with integrated shims
US6469604B1 (en) * 1998-05-15 2002-10-22 Alex Palkovich Coil for a magnet and a method of manufacture thereof
US6157276A (en) * 1998-08-14 2000-12-05 General Electric Company MRI magnet assembly with non-conductive inner wall
US6218838B1 (en) * 1998-08-28 2001-04-17 Picker International, Inc. MRI magnet with high homogeneity, patient access, and low forces on the driver coils
US5992006A (en) * 1998-12-23 1999-11-30 Fonar Corporation Method for passive control of magnet hemogeneity
DE19901331B4 (de) 1999-01-15 2006-10-26 Bruker Biospin Gmbh Einrichtung und Verfahren zum Homogenisieren eines Magnetfeldes
US6396271B1 (en) 1999-09-17 2002-05-28 Philips Medical Systems (Cleveland), Inc. Tunable birdcage transmitter coil
US6275129B1 (en) * 1999-10-26 2001-08-14 General Electric Company Shim assembly for a magnet and method for making
US6634088B1 (en) 2000-03-31 2003-10-21 Fonar Corporation Method and apparatus for shimming a magnet to control a three-dimensional field
US6973711B1 (en) * 2000-05-24 2005-12-13 Fonar Corporation Method for making pieces for a magnetic resonance imaging magnet
EP1260827B1 (de) * 2001-05-17 2008-12-31 Mitsubishi Denki Kabushiki Kaisha Supraleitender Magnet für die bildgebende magnetische Resonanz
US6861933B1 (en) 2001-05-17 2005-03-01 Mitsubishi Denki Kabushiki Kaisha Superconductive magnet device
DE10214112B4 (de) * 2002-03-28 2006-01-26 Siemens Ag Shimkasten, Gradientenspulensystem und Magnetresonanzgerät zum Aufnehmen des Shimkastens
DE10217384C1 (de) * 2002-04-18 2003-12-24 Siemens Ag Gradientenspulensystem
DE10219769B3 (de) * 2002-05-02 2004-01-22 Siemens Ag Magnetresonanzgerät und mit Shimelementen bestückbare Trägervorrichtung
US6984982B2 (en) * 2002-07-29 2006-01-10 Ge Medical Systems Global Technology Company Llc Method and system for shimming an MRI magnet assembly
US6836119B2 (en) * 2002-10-15 2004-12-28 Koninklijke Philips Electronics, N.V. Method and apparatus for aligning a magnetic field modifying structure in a magnetic resonance imaging scanner
EP1646884B1 (de) * 2003-05-30 2015-01-07 Koninklijke Philips N.V. Mri durch guss gefestigten shims
US7414403B2 (en) * 2003-07-31 2008-08-19 Chiodo Chris D Imaging machine / MRI positioning assembly for magnet coils and specimens at the sweet spot of an imaging field
US7053617B2 (en) * 2003-10-01 2006-05-30 General Electric Co. Integrated electronic RF shielding apparatus for an MRI magnet
US7375518B2 (en) * 2003-10-15 2008-05-20 Hitachi Medical Corporation Structure for reducing noise in magnetic resonance imaging apparatus
US7508208B2 (en) 2004-03-03 2009-03-24 Koninklijke Philips Electronics N.V. Magnetic resonance imaging scanner with booster iron
DE602005007196D1 (de) * 2004-03-15 2008-07-10 Koninkl Philips Electronics Nv Hauptmagnet-perforations-wirbelstromabschirmung für eine magnetresonanz-bildgebungseinrichtung
ATE420375T1 (de) * 2004-06-17 2009-01-15 Koninkl Philips Electronics Nv Magnetresonanzabbildungssystem mit eisenunterstütztem magnetfeldgradientensystem
GB2419417B (en) 2004-10-20 2007-05-16 Gen Electric Gradient bore cooling and RF shield
US7224167B2 (en) * 2004-11-30 2007-05-29 General Electric Company Magnetic field generating apparatus and method for magnetic resonance imaging
JP2008532681A (ja) * 2005-03-17 2008-08-21 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 磁気共鳴用の最小エネルギーのシムコイル
JP4639948B2 (ja) * 2005-05-17 2011-02-23 三菱電機株式会社 磁石装置及びそれを用いた磁気共鳴イメージング装置
US9297867B2 (en) * 2012-01-05 2016-03-29 General Electric Company Radio frequncy (RF) body coil and method for tuning an RF body coil for magnetic resonance imaging
JP2014223287A (ja) * 2013-04-15 2014-12-04 株式会社東芝 磁気共鳴イメージング装置
BR112015031516A2 (pt) * 2013-06-21 2017-07-25 Koninklijke Philips Nv aparelho de ressonância magnética
CA2884097C (en) 2014-03-13 2020-04-21 LT Imaging Inc. Magnetic resonance imaging (mri) system and method
US9778334B2 (en) * 2014-05-07 2017-10-03 Scott Technology Nz Limited Magnetic shimming and magnet arrangements
US20170276748A1 (en) * 2016-03-25 2017-09-28 General Electric Company Force reduced magnetic shim drawer
CN107907844B (zh) * 2017-11-03 2020-04-24 上海联影医疗科技有限公司 磁共振成像设备及其匀场方法
WO2020118352A1 (en) * 2018-12-13 2020-06-18 Magnetica Limited Gradient coil system
CN112816923B (zh) * 2020-12-29 2023-07-28 深圳市联影高端医疗装备创新研究院 一种超高场发射匀场线圈结构
CN113702884A (zh) * 2021-08-26 2021-11-26 深圳市联影高端医疗装备创新研究院 医疗影像设备
EP4394422A1 (de) * 2022-12-28 2024-07-03 Siemens Healthineers AG Shimkasten für eine gradientenspuleneinheit eines mr-systems

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587504A (en) * 1983-11-11 1986-05-06 Oxford Magnet Technology Limited Magnet assembly for use in NMR apparatus
NL8502340A (nl) * 1985-08-26 1987-03-16 Philips Nv Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen.
US4737716A (en) * 1986-02-06 1988-04-12 General Electric Company Self-shielded gradient coils for nuclear magnetic resonance imaging
US4733189A (en) * 1986-06-03 1988-03-22 Massachusetts Institute Of Technology Magnetic resonance imaging systems
US4698611A (en) * 1986-12-03 1987-10-06 General Electric Company Passive shimming assembly for MR magnet
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
US5235284A (en) * 1989-07-07 1993-08-10 Mitsubishi Denki Kabushiki Kaisha Passive shim arrangement for nuclear magnetic resonance
JPH0339676A (ja) * 1989-07-07 1991-02-20 Mitsubishi Electric Corp 磁場補正装置
US5045794A (en) * 1989-12-04 1991-09-03 General Electric Company Method of optimizing passive shim placement in magnetic resonance magnets
US4990877A (en) * 1989-12-04 1991-02-05 General Electric Company Passive shimming assembly for MR magnet
US5179338A (en) * 1991-09-13 1993-01-12 General Electric Company Refrigerated superconducting MR magnet with integrated gradient coils
US5349297A (en) * 1992-03-27 1994-09-20 Picker International Inc. Combined self shielded gradient coil and shimset
US5406204A (en) * 1992-03-27 1995-04-11 Picker International, Inc. Integrated MRI gradient coil and RF screen

Also Published As

Publication number Publication date
EP0737867A1 (de) 1996-10-16
DE69616635D1 (de) 2001-12-13
EP0737867B1 (de) 2001-11-07
US5550472A (en) 1996-08-27

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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: PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC., CLEVELA

8339 Ceased/non-payment of the annual fee