IT1298022B1 - Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare. - Google Patents

Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.

Info

Publication number
IT1298022B1
IT1298022B1 IT97SV000048A ITSV970048A IT1298022B1 IT 1298022 B1 IT1298022 B1 IT 1298022B1 IT 97SV000048 A IT97SV000048 A IT 97SV000048A IT SV970048 A ITSV970048 A IT SV970048A IT 1298022 B1 IT1298022 B1 IT 1298022B1
Authority
IT
Italy
Prior art keywords
permanent magnet
magnetic resonance
nuclear magnetic
image detection
image
Prior art date
Application number
IT97SV000048A
Other languages
English (en)
Inventor
Alessandro Trequattrini
Gianluca Coscia
Carlo Sanfilippo
Eugenio Biglieri
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 IT97SV000048A priority Critical patent/IT1298022B1/it
Publication of ITSV970048A0 publication Critical patent/ITSV970048A0/it
Priority to ES98113342T priority patent/ES2271980T3/es
Priority to DE69835654T priority patent/DE69835654T2/de
Priority to EP98113342A priority patent/EP0921408B1/en
Priority to US09/199,811 priority patent/US6191584B1/en
Publication of ITSV970048A1 publication Critical patent/ITSV970048A1/it
Application granted granted Critical
Publication of IT1298022B1 publication Critical patent/IT1298022B1/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
    • G01R33/383—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
    • G01R33/3873—Compensation 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)
IT97SV000048A 1997-12-05 1997-12-05 Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare. IT1298022B1 (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT97SV000048A IT1298022B1 (it) 1997-12-05 1997-12-05 Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.
ES98113342T ES2271980T3 (es) 1997-12-05 1998-07-17 Iman permanente para deteccion de imagenes mediante resonancia magnatica nuclear.
DE69835654T DE69835654T2 (de) 1997-12-05 1998-07-17 Permanentmagnet für magnetische Kernspin-Bilddetektion
EP98113342A EP0921408B1 (en) 1997-12-05 1998-07-17 Permanent magnet for nuclear magnetic resonance image detection
US09/199,811 US6191584B1 (en) 1997-12-05 1998-11-25 Permanent magnet for NMR image detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97SV000048A IT1298022B1 (it) 1997-12-05 1997-12-05 Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.

Publications (3)

Publication Number Publication Date
ITSV970048A0 ITSV970048A0 (it) 1997-12-05
ITSV970048A1 ITSV970048A1 (it) 1999-06-05
IT1298022B1 true IT1298022B1 (it) 1999-12-20

Family

ID=11408242

Family Applications (1)

Application Number Title Priority Date Filing Date
IT97SV000048A IT1298022B1 (it) 1997-12-05 1997-12-05 Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare.

Country Status (5)

Country Link
US (1) US6191584B1 (it)
EP (1) EP0921408B1 (it)
DE (1) DE69835654T2 (it)
ES (1) ES2271980T3 (it)
IT (1) IT1298022B1 (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100319923B1 (ko) * 1999-05-10 2002-01-09 윤종용 자기공명영상장치용 자기장 발생 장치
JP3934312B2 (ja) * 2000-07-11 2007-06-20 株式会社日立メディコ 磁気共鳴イメージング装置
US6662434B2 (en) 2001-04-03 2003-12-16 General Electric Company Method and apparatus for magnetizing a permanent magnet
US6518867B2 (en) 2001-04-03 2003-02-11 General Electric Company Permanent magnet assembly and method of making thereof
EP1593342B1 (en) * 2003-02-10 2011-12-14 Hitachi Metals, Ltd. Magnetic field-producing device
CN100504432C (zh) 2003-05-23 2009-06-24 西门子（中国）有限公司 磁共振设备中的静磁场调节方法及其静磁场发生装置
US7423431B2 (en) * 2003-09-29 2008-09-09 General Electric Company Multiple ring polefaceless permanent magnet and method of making
US7148689B2 (en) * 2003-09-29 2006-12-12 General Electric Company Permanent magnet assembly with movable permanent body for main magnetic field adjustable
WO2006028740A2 (en) * 2004-09-01 2006-03-16 Igt Gaming system having multiple gaming devices that share a multi-outcome display
US7400147B2 (en) * 2005-11-03 2008-07-15 Uri Rapoport Self-fastening cage surrounding a magnetic resonance device and methods thereof
ITSV20060015A1 (it) * 2006-06-06 2007-12-07 Esaote Spa Macchina per l'acquisizione di immagini mediante risonanza magnetica nucleare di pazienti in posizione naturale di sollecitazione degli arti, in particolare degli arti inferiori
EP1962100A1 (en) 2007-02-20 2008-08-27 Esaote S.p.A. Magnetic structure for MRI machines and MRI machine particularly for orthopedic or rheumatologic applications
US9222998B2 (en) * 2008-12-18 2015-12-29 Grum Teklemariam Compact inhomogeneous permanent magnetic field generator for magnetic resonance imaging
EP2259082B1 (en) 2009-05-29 2012-07-11 Esaote S.p.A. MRI apparatus comprising a superconducting permanent magnet
US9448294B2 (en) 2009-06-30 2016-09-20 Aspect Imaging Ltd. Cage in an MRD with a fastening/attenuating system
US10076266B2 (en) 2010-07-07 2018-09-18 Aspect Imaging Ltd. Devices and methods for a neonate incubator, capsule and cart
CA2884097C (en) 2014-03-13 2020-04-21 LT Imaging Inc. Magnetic resonance imaging (mri) system and method
ITUB20155325A1 (it) 2015-10-26 2017-04-28 Sotgiu Antonello Magnete per diagnostica clinica tramite risonanze magnetiche (MRI) composto da anelli cilindrici di tipo Halbach: modalita di costruzione e tecniche per rendere omogeneo il campo magnetico in una larga frazione del volume interno del magnete.
US11988730B2 (en) 2016-08-08 2024-05-21 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
CA3033328C (en) * 2016-08-08 2022-06-21 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US11287497B2 (en) 2016-08-08 2022-03-29 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10224135B2 (en) * 2016-08-08 2019-03-05 Aspect Imaging Ltd. Device, system and method for obtaining a magnetic measurement with permanent magnets
US10847294B2 (en) 2017-07-10 2020-11-24 Aspect Imaging Ltd. System for generating a magnetic field

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675609A (en) * 1985-09-18 1987-06-23 Fonar Corporation Nuclear magnetic resonance apparatus including permanent magnet configuration
DE3779715T2 (de) * 1986-09-27 1993-01-28 Sumitomo Spec Metals Vorrichtung zur erzeugung eines magnetfeldes fuer rechnergesteuerte tomographie mittels magnetischer kernresonanz.
JPS63241905A (ja) * 1987-03-27 1988-10-07 Sumitomo Special Metals Co Ltd 磁界発生装置
GB9206014D0 (en) * 1992-03-19 1992-04-29 Oxford Instr Ltd Magnet assembly
US5621324A (en) * 1992-03-18 1997-04-15 Sumitomo Special Metals Company Limited Magnetic field generator for MRI
JPH067316A (ja) * 1992-06-29 1994-01-18 Hitachi Medical Corp 磁気共鳴イメージング装置の磁界発生装置
US5495222A (en) * 1994-04-15 1996-02-27 New York University Open permanent magnet structure for generating highly uniform field
US5475355A (en) * 1994-04-15 1995-12-12 New York University Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter

Also Published As

Publication number Publication date
ITSV970048A0 (it) 1997-12-05
EP0921408B1 (en) 2006-08-23
ES2271980T3 (es) 2007-04-16
US6191584B1 (en) 2001-02-20
DE69835654T2 (de) 2007-09-20
DE69835654D1 (de) 2006-10-05
ITSV970048A1 (it) 1999-06-05
EP0921408A1 (en) 1999-06-09

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Legal Events

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