IT1397713B1 - Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico. - Google Patents

Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico.

Info

Publication number
IT1397713B1
IT1397713B1 ITGE2010A000008A ITGE20100008A IT1397713B1 IT 1397713 B1 IT1397713 B1 IT 1397713B1 IT GE2010A000008 A ITGE2010A000008 A IT GE2010A000008A IT GE20100008 A ITGE20100008 A IT GE20100008A IT 1397713 B1 IT1397713 B1 IT 1397713B1
Authority
IT
Italy
Prior art keywords
homogenity
correction
machine
magnetic field
magnetic resonance
Prior art date
Application number
ITGE2010A000008A
Other languages
English (en)
Inventor
Stefano Pittaluga
Alessandro Trequattrini
Davide Carlini
Felice Badino
Stefano Besio
Vincenzo Punzo
Original Assignee
Esaote Spa
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 Esaote Spa filed Critical Esaote Spa
Priority to ITGE2010A000008A priority Critical patent/IT1397713B1/it
Priority to PCT/EP2011/050608 priority patent/WO2011089115A1/en
Priority to EP11700358.2A priority patent/EP2526436B1/en
Priority to US13/519,864 priority patent/US9188652B2/en
Publication of ITGE20100008A1 publication Critical patent/ITGE20100008A1/it
Application granted granted Critical
Publication of IT1397713B1 publication Critical patent/IT1397713B1/it

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
    • G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
    • 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
    • G01R33/38—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
    • 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
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
ITGE2010A000008A 2010-01-22 2010-01-22 Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico. IT1397713B1 (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITGE2010A000008A IT1397713B1 (it) 2010-01-22 2010-01-22 Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico.
PCT/EP2011/050608 WO2011089115A1 (en) 2010-01-22 2011-01-18 Magnetic resonance imaging apparatus with means for correcting magnetic field homogeneity
EP11700358.2A EP2526436B1 (en) 2010-01-22 2011-01-18 Magnetic resonance imaging apparatus with means for correcting magnetic field homogeneity
US13/519,864 US9188652B2 (en) 2010-01-22 2011-01-18 Magnetic resonance imaging apparatus with means for correcting magnetic field homogeneity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITGE2010A000008A IT1397713B1 (it) 2010-01-22 2010-01-22 Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico.

Publications (2)

Publication Number Publication Date
ITGE20100008A1 ITGE20100008A1 (it) 2011-07-23
IT1397713B1 true IT1397713B1 (it) 2013-01-24

Family

ID=42667993

Family Applications (1)

Application Number Title Priority Date Filing Date
ITGE2010A000008A IT1397713B1 (it) 2010-01-22 2010-01-22 Macchina per risonanza magnetica nucleare con mezzi per la correzione dell'omogeneità del campo magnetico.

Country Status (4)

Country Link
US (1) US9188652B2 (it)
EP (1) EP2526436B1 (it)
IT (1) IT1397713B1 (it)
WO (1) WO2011089115A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3123142A1 (en) 2016-03-22 2017-09-28 Hyperfine Research, Inc. Methods and apparatus for magnetic field shimming
EP3553547A1 (en) 2018-04-12 2019-10-16 Koninklijke Philips N.V. Shim irons for a magnetic resonance apparatus
US20220276074A1 (en) * 2021-01-22 2022-09-01 Eric HASELTINE Systems and methods for through wall locating
US11092462B1 (en) * 2021-01-22 2021-08-17 Eric HASELTINE Systems and methods for through wall locating

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682111A (en) * 1985-03-05 1987-07-21 Kabushiki Kaisha Toshiba Magnetic resonance imaging magnet
US4675609A (en) * 1985-09-18 1987-06-23 Fonar Corporation Nuclear magnetic resonance apparatus including permanent magnet configuration
JPH01164356A (ja) * 1987-12-22 1989-06-28 Asahi Chem Ind Co Ltd 均一磁界の発生装置
FI933834A7 (fi) * 1993-09-01 1995-03-02 Picker Nordstar Oy Magneettikuvauslaitteen napakenkä
EP1586916B1 (en) 1995-10-09 2011-06-01 Snaptrack, Inc. GPS receiver and method for processing GPS signals
IT1294051B1 (it) 1997-04-29 1999-03-15 Esaote Spa Struttura magnetica per la generazione di campi magnetici adatti all'uso nel rilevamento d'immagine in risonanza magnetica nucleare
JP3734193B2 (ja) 1997-05-02 2006-01-11 パイオニア株式会社 ナビゲーション装置
KR100373577B1 (ko) 1997-12-26 2003-02-26 스미토모 도큐슈 긴조쿠 가부시키가이샤 자기 공명 촬영 장치용 자계 발생 장치
IT1305960B1 (it) 1998-05-11 2001-05-21 Esaote Spa Struttura di magnete in particolare per macchine per il rilevamentod'immagine in risonanza magnetica nucleare.
US6255928B1 (en) * 1998-11-02 2001-07-03 General Electric Company Magnet having a shim for a laminated pole piece
DE19901331B4 (de) * 1999-01-15 2006-10-26 Bruker Biospin Gmbh Einrichtung und Verfahren zum Homogenisieren eines Magnetfeldes
JP2000333929A (ja) * 1999-05-25 2000-12-05 Hitachi Medical Corp Ｍｒｉ装置用静磁場発生装置およびそれを用いたｍｒｉ装置
JP2001017405A (ja) * 1999-07-05 2001-01-23 Hitachi Medical Corp Ｍｒｉ装置
JP2002153441A (ja) * 2000-11-22 2002-05-28 Hitachi Medical Corp 磁気共鳴イメージング装置
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
US6809519B2 (en) * 2001-07-12 2004-10-26 Shin-Etsu Chemical Co., Ltd. Inclined magnetic field generation coil and magnetic field generator for MRI
JP3694659B2 (ja) * 2001-07-16 2005-09-14 株式会社日立製作所 マグネット及びその磁場調整方法並びに磁気共鳴撮像装置
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
JP3934010B2 (ja) * 2002-08-22 2007-06-20 株式会社日立メディコ 開放型ｍｒｉ装置の磁場均一度調整方法
US8064984B2 (en) * 2003-03-18 2011-11-22 Esaote S.P.A. Magnetic resonance imaging apparatus
US6778054B1 (en) * 2003-10-03 2004-08-17 General Electric Company Methods and apparatus for passive shimming of magnets
ITSV20040016A1 (it) 2004-04-13 2004-07-13 Esaote Spa Macchina per risonanza magnetico nucleare

Also Published As

Publication number Publication date
US9188652B2 (en) 2015-11-17
US20120286785A1 (en) 2012-11-15
EP2526436B1 (en) 2016-03-30
ITGE20100008A1 (it) 2011-07-23
EP2526436A1 (en) 2012-11-28
WO2011089115A1 (en) 2011-07-28

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