DE69633683D1 - Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten - Google Patents

Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten

Info

Publication number
DE69633683D1
DE69633683D1 DE69633683T DE69633683T DE69633683D1 DE 69633683 D1 DE69633683 D1 DE 69633683D1 DE 69633683 T DE69633683 T DE 69633683T DE 69633683 T DE69633683 T DE 69633683T DE 69633683 D1 DE69633683 D1 DE 69633683D1
Authority
DE
Germany
Prior art keywords
permanent magnets
magnetic circuit
circuit arrangement
opposing permanent
opposing
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
Application number
DE69633683T
Other languages
English (en)
Other versions
DE69633683T2 (de
Inventor
Ken Ohashi
Yuhito Yoneda
Koji Miyata
Yuji Inoue
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.)
Shin Etsu Chemical Co Ltd
GE Healthcare Japan Corp
Original Assignee
Shin Etsu Chemical Co Ltd
GE Yokogawa Medical System Ltd
Yokogawa Medical Systems Ltd
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
Priority claimed from JP21854995A external-priority patent/JP3151129B2/ja
Priority claimed from JP7218544A external-priority patent/JPH0961507A/ja
Application filed by Shin Etsu Chemical Co Ltd, GE Yokogawa Medical System Ltd, Yokogawa Medical Systems Ltd filed Critical Shin Etsu Chemical Co Ltd
Publication of DE69633683D1 publication Critical patent/DE69633683D1/de
Application granted granted Critical
Publication of DE69633683T2 publication Critical patent/DE69633683T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/20Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387Compensation of inhomogeneities
    • G01R33/3873Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
DE69633683T 1995-08-28 1996-08-27 Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten Expired - Lifetime DE69633683T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP21854995A JP3151129B2 (ja) 1995-08-28 1995-08-28 磁石対向型永久磁石磁気回路とその磁場調整方法
JP21854495 1995-08-28
JP7218544A JPH0961507A (ja) 1995-08-28 1995-08-28 磁石対向型永久磁石磁気回路
JP21854995 1995-08-28

Publications (2)

Publication Number Publication Date
DE69633683D1 true DE69633683D1 (de) 2004-11-25
DE69633683T2 DE69633683T2 (de) 2006-03-09

Family

ID=26522620

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69613061T Expired - Lifetime DE69613061T2 (de) 1995-08-28 1996-08-27 Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten
DE69633683T Expired - Lifetime DE69633683T2 (de) 1995-08-28 1996-08-27 Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69613061T Expired - Lifetime DE69613061T2 (de) 1995-08-28 1996-08-27 Magnetkreisanordnung mit einander gegenüberliegenden Permanentmagneten

Country Status (3)

Country Link
US (2) US5864275A (de)
EP (3) EP1515150A1 (de)
DE (2) DE69613061T2 (de)

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JP3987686B2 (ja) * 2001-02-02 2007-10-10 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 静磁界補正方法およびmri装置
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JP3878434B2 (ja) * 2001-05-10 2007-02-07 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴撮像用コイル構造体および磁気共鳴撮像装置
DE10147742B4 (de) 2001-09-27 2005-05-19 Siemens Ag Magnetresonanzgerät mit einem horizontalen Grundmagnetfeld
DE10147984B4 (de) * 2001-09-28 2007-10-11 Siemens Ag Magnetresonanz-Untersuchungsgerät mit einer Einrichtung zur Erzeugung eines homogenen Magnetfeldes und Verfahren zur Verbesserung der Homogenität eines Magnetfeldes
US7084632B2 (en) * 2002-04-01 2006-08-01 Shenyang Neusoft Bopu Nmr Tech Co., Ltd. Permanent magnet for magnet resonance
US6873239B2 (en) * 2002-11-01 2005-03-29 Metglas Inc. Bulk laminated amorphous metal inductive device
US6737951B1 (en) 2002-11-01 2004-05-18 Metglas, Inc. Bulk amorphous metal inductive device
US7242191B2 (en) * 2002-11-25 2007-07-10 General Electric Company Cold mass support structure and helium vessel of actively shielded high field open MRI magnets
US7235910B2 (en) 2003-04-25 2007-06-26 Metglas, Inc. Selective etching process for cutting amorphous metal shapes and components made thereof
US6788060B1 (en) 2003-05-28 2004-09-07 Ge Medical Systems Global Technology Co., Inc. Imaging system with homogeneous magnetic field
US7038565B1 (en) 2003-06-09 2006-05-02 Astronautics Corporation Of America Rotating dipole permanent magnet assembly
US7479104B2 (en) 2003-07-08 2009-01-20 Maquet Cardiovascular, Llc Organ manipulator apparatus
US6946941B2 (en) * 2003-08-29 2005-09-20 Astronautics Corporation Of America Permanent magnet assembly
US6778054B1 (en) * 2003-10-03 2004-08-17 General Electric Company Methods and apparatus for passive shimming of magnets
US7375518B2 (en) * 2003-10-15 2008-05-20 Hitachi Medical Corporation Structure for reducing noise in magnetic resonance imaging apparatus
JP2005168692A (ja) 2003-12-10 2005-06-30 Shin Etsu Chem Co Ltd 永久磁石対向型磁気回路およびその磁場を調整する方法
US7179224B2 (en) * 2003-12-30 2007-02-20 Cardiothoracic Systems, Inc. Organ manipulator and positioner and methods of using the same
WO2005074608A2 (en) * 2004-02-03 2005-08-18 Astronautics Corporation Of America Permanent magnet assembly
ITSV20040016A1 (it) * 2004-04-13 2004-07-13 Esaote Spa Macchina per risonanza magnetico nucleare
JP3733441B1 (ja) 2004-07-02 2006-01-11 株式会社日立製作所 磁気共鳴撮像装置及びその磁石装置
US7224167B2 (en) * 2004-11-30 2007-05-29 General Electric Company Magnetic field generating apparatus and method for magnetic resonance imaging
US20070088203A1 (en) * 2005-05-25 2007-04-19 Liming Lau Surgical assemblies and methods for visualizing and performing surgical procedures in reduced-access surgical sites
US8083664B2 (en) 2005-05-25 2011-12-27 Maquet Cardiovascular Llc Surgical stabilizers and methods for use in reduced-access surgical sites
US7199689B1 (en) * 2006-01-09 2007-04-03 Brk Wireless Company, Inc High field NMR permanent magnetic structure
US20070178383A1 (en) * 2006-01-31 2007-08-02 Viavattine Joseph J Current collector
WO2007112044A2 (en) 2006-03-24 2007-10-04 Medtronic, Inc Implantable medical device
US7295012B1 (en) * 2006-04-28 2007-11-13 General Electric Company Methods and apparatus for MRI shim elements
US20080103543A1 (en) * 2006-10-31 2008-05-01 Medtronic, Inc. Implantable medical device with titanium alloy housing
DE102007031745B4 (de) 2007-07-06 2013-04-25 Max Baermann Gmbh Magnetsystem zur Erzeugung homogener Magnetfelder
DE102008001896B4 (de) * 2008-05-21 2023-02-02 Robert Bosch Gmbh Mikromechanisches Bauteil und Herstellungsverfahren für ein mikromechanisches Bauteil
GB2468852A (en) * 2009-03-23 2010-09-29 Siemens Magnet Technology Ltd Arrangements and Method for Shimming a Magnetic Field
BR122020016721B8 (pt) 2010-06-14 2022-04-12 Maquet Cardiovascular Llc Instrumentos cirúrgicos
GB201114045D0 (en) * 2011-08-15 2011-09-28 Emscan Ltd Magnet
DE102017100178B4 (de) * 2017-01-06 2019-02-14 Windhorst Beteiligungsgesellschaft Mbh Verfahren zum Abgleichen eines räumlichen Magnetfeldverlaufs eines Magnetfeldsystems an einen vorgegebenen räumlichen Magnetfeldverlauf und ein mithilfe des Verfahrens abgeglichenes Magnetfeldsystem
BR112020021872A2 (pt) * 2018-05-21 2021-01-26 Hyperfine Research, Inc. métodos e aparelhos de magneto b0 para um sistema de ressonância magnética
US11462960B2 (en) * 2019-12-02 2022-10-04 Hiwin Mikrosystem Corp. Rotor with first and second permanent magnets having support members and slots
EP4019995B1 (de) * 2020-12-22 2023-08-16 Bruker BioSpin GmbH Epr-spektrometer mit mindestens einem zumindest teilweise aus einem funktionsmaterial hergestellten polstück

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JP2759185B2 (ja) * 1992-09-04 1998-05-28 株式会社日立メディコ 磁気共鳴イメージング装置
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Also Published As

Publication number Publication date
EP1515150A1 (de) 2005-03-16
US5963117A (en) 1999-10-05
EP0760484B1 (de) 2001-05-30
EP0985934B1 (de) 2004-10-20
EP0760484A2 (de) 1997-03-05
EP0985934A1 (de) 2000-03-15
EP0760484A3 (de) 1997-07-23
DE69613061T2 (de) 2001-10-31
DE69633683T2 (de) 2006-03-09
DE69613061D1 (de) 2001-07-05
US5864275A (en) 1999-01-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: BOCKHORNI & KOLLEGEN, 80687 MUENCHEN

8327 Change in the person/name/address of the patent owner

Owner name: GE HEALTHCARE JAPAN CORP., HINO, TOKYO, JP

Owner name: SHIN-ETSU CHEMICAL CO., LTD., TOKIO/TOKYO, JP