JP2000083925A5 - - Google Patents

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Publication number
JP2000083925A5
JP2000083925A5 JP1999234875A JP23487599A JP2000083925A5 JP 2000083925 A5 JP2000083925 A5 JP 2000083925A5 JP 1999234875 A JP1999234875 A JP 1999234875A JP 23487599 A JP23487599 A JP 23487599A JP 2000083925 A5 JP2000083925 A5 JP 2000083925A5
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JP
Japan
Prior art keywords
magnetic
magnetic pole
layers
blocks
magnetic flux
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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.)
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Application number
JP1999234875A
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English (en)
Japanese (ja)
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JP2000083925A (ja
JP4481395B2 (ja
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Publication date
Priority claimed from US09/143,960 external-priority patent/US6150818A/en
Application filed filed Critical
Publication of JP2000083925A publication Critical patent/JP2000083925A/ja
Publication of JP2000083925A5 publication Critical patent/JP2000083925A5/ja
Application granted granted Critical
Publication of JP4481395B2 publication Critical patent/JP4481395B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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JP23487599A 1998-08-31 1999-08-23 開放型磁気共鳴イメージング・システム Expired - Fee Related JP4481395B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/143,960 US6150818A (en) 1998-08-31 1998-08-31 Low eddy current and low hysteresis magnet pole faces in MR imaging
US09/143960 1998-08-31

Publications (3)

Publication Number Publication Date
JP2000083925A JP2000083925A (ja) 2000-03-28
JP2000083925A5 true JP2000083925A5 (https=) 2008-10-16
JP4481395B2 JP4481395B2 (ja) 2010-06-16

Family

ID=22506461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23487599A Expired - Fee Related JP4481395B2 (ja) 1998-08-31 1999-08-23 開放型磁気共鳴イメージング・システム

Country Status (6)

Country Link
US (1) US6150818A (https=)
EP (1) EP0984461B1 (https=)
JP (1) JP4481395B2 (https=)
KR (1) KR20000017646A (https=)
CN (1) CN1252977A (https=)
DE (1) DE69929857T2 (https=)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6331363B1 (en) 1998-11-06 2001-12-18 Honeywell International Inc. Bulk amorphous metal magnetic components
US6346337B1 (en) 1998-11-06 2002-02-12 Honeywell International Inc. Bulk amorphous metal magnetic component
US6348275B1 (en) 1998-11-06 2002-02-19 Honeywell International Inc. Bulk amorphous metal magnetic component
US6552639B2 (en) 2000-04-28 2003-04-22 Honeywell International Inc. Bulk stamped amorphous metal magnetic component
ITSV20000023A1 (it) * 2000-06-15 2001-12-15 Esaote Spa Procedimento per la realizzazione di dispositivi di generazione di campi magnetici nelle macchine per il rilevamento di immagini in risonanz
CN2542205Y (zh) * 2002-04-01 2003-04-02 沈阳东软数字医疗系统股份有限公司 两立柱开放式c型永磁型磁共振磁体
US7084632B2 (en) * 2002-04-01 2006-08-01 Shenyang Neusoft Bopu Nmr Tech Co., Ltd. Permanent magnet for magnet resonance
US6737951B1 (en) 2002-11-01 2004-05-18 Metglas, Inc. Bulk amorphous metal inductive device
US6873239B2 (en) 2002-11-01 2005-03-29 Metglas Inc. Bulk laminated amorphous metal inductive device
ITSV20030011A1 (it) * 2003-03-31 2004-10-01 Esaote Spa Struttura magnetica per macchine di acquisiszione di
US7235910B2 (en) 2003-04-25 2007-06-26 Metglas, Inc. Selective etching process for cutting amorphous metal shapes and components made thereof
US6937018B2 (en) * 2003-10-31 2005-08-30 General Electric Company Systems and methods for fabricating pole pieces for magnetic resonance imaging systems
ITSV20040016A1 (it) * 2004-04-13 2004-07-13 Esaote Spa Macchina per risonanza magnetico nucleare
JP2006149722A (ja) * 2004-11-30 2006-06-15 Ge Medical Systems Global Technology Co Llc マグネットシステムおよびｍｒｉ装置
CN101256221B (zh) * 2007-02-28 2010-09-29 西门子（中国）有限公司 一种减小梯度磁场导致的涡流的方法
US20110234347A1 (en) * 2010-03-24 2011-09-29 Aspect Magnet Technologies Ltd. Pole piece for permanent magnet mri systems
JP2014236827A (ja) * 2013-06-07 2014-12-18 株式会社日立メディコ 磁気共鳴イメージング装置
CN103860178B (zh) * 2014-03-21 2016-04-06 沈阳中北真空磁电科技有限公司 一种用于核磁共振成像仪的永磁体
CN103892834B (zh) * 2014-03-21 2016-05-25 沈阳中北真空磁电科技有限公司 一种用于核磁共振成像仪的永磁体
JP6368625B2 (ja) * 2014-11-18 2018-08-01 株式会社日立製作所 磁気共鳴イメージング装置
CN104407314A (zh) * 2014-11-26 2015-03-11 江苏美时医疗技术有限公司 一种永磁体抗涡流组件
EP4019995B1 (en) * 2020-12-22 2023-08-16 Bruker BioSpin GmbH Epr spectrometer with at least one pole piece made at least partially of a function material
US12099104B2 (en) 2023-01-20 2024-09-24 Fujifilm Healthcare Americas Corporation Passive shield for magnetic resonance imaging gradient coils

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951247A (en) * 1946-02-19 1960-08-30 Halpern Otto Isotropic absorbing layers
US4675609A (en) * 1985-09-18 1987-06-23 Fonar Corporation Nuclear magnetic resonance apparatus including permanent magnet configuration
US4827235A (en) * 1986-07-18 1989-05-02 Kabushiki Kaisha Toshiba Magnetic field generator useful for a magnetic resonance imaging instrument
JPH01142028A (ja) * 1987-11-30 1989-06-02 Kawasaki Steel Corp 磁気特性の優れた厚肉鋼材の製造方法
US5061897A (en) * 1990-03-23 1991-10-29 Fonar Corporation Eddy current control in magnetic resonance imaging
US5252924A (en) * 1991-11-18 1993-10-12 Sumitomo Special Metals Co., Ltd. Magnetic field generating apparatus for MRI
SG43224A1 (en) * 1990-09-29 1997-10-17 Sumitomo Spec Metals Magnetic field generating device used for MRI
US5470646A (en) * 1992-06-11 1995-11-28 Kabushiki Kaisha Toshiba Magnetic core and method of manufacturing core
US5495171A (en) * 1993-01-19 1996-02-27 Fonar Corporation Eddy current control in NMR imaging systems
FI105293B (fi) * 1993-06-08 2000-07-14 Picker Nordstar Oy Magneettikuvaukseen käytettävän magneetin napakenkä
GB9320043D0 (en) * 1993-09-29 1993-11-17 Oxford Magnet Rechnology Limit Improvements in or relating to mri magnets

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