CN1611187A - 用于永久mri磁场发生器的磁中心场调节系统和方法 - Google Patents

用于永久mri磁场发生器的磁中心场调节系统和方法 Download PDF

Info

Publication number
CN1611187A
CN1611187A CN200410087447.3A CN200410087447A CN1611187A CN 1611187 A CN1611187 A CN 1611187A CN 200410087447 A CN200410087447 A CN 200410087447A CN 1611187 A CN1611187 A CN 1611187A
Authority
CN
China
Prior art keywords
magnetic
yoke
sept
opposite directions
magnetic field
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.)
Pending
Application number
CN200410087447.3A
Other languages
English (en)
Chinese (zh)
Inventor
B·-X·徐
W·沈
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.)
GE Medical Systems Global Technology Co LLC
Original Assignee
GE Medical Systems Global Technology Co LLC
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 GE Medical Systems Global Technology Co LLC filed Critical GE Medical Systems Global Technology Co LLC
Publication of CN1611187A publication Critical patent/CN1611187A/zh
Pending legal-status Critical Current

Links

Images

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
    • G01R33/38—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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
CN200410087447.3A 2003-10-16 2004-10-15 用于永久mri磁场发生器的磁中心场调节系统和方法 Pending CN1611187A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/686972 2003-10-16
US10/686,972 US6809619B1 (en) 2003-10-16 2003-10-16 System and method for adjusting magnetic center field for permanent MRI magnetic field generator

Publications (1)

Publication Number Publication Date
CN1611187A true CN1611187A (zh) 2005-05-04

Family

ID=33160043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200410087447.3A Pending CN1611187A (zh) 2003-10-16 2004-10-15 用于永久mri磁场发生器的磁中心场调节系统和方法

Country Status (4)

Country Link
US (1) US6809619B1 (enExample)
EP (1) EP1524531A3 (enExample)
JP (1) JP2005118566A (enExample)
CN (1) CN1611187A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114496456A (zh) * 2022-03-04 2022-05-13 中车青岛四方机车车辆股份有限公司 一种集成悬浮电磁铁及直线电机、磁浮列车

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100581454C (zh) * 2006-07-14 2010-01-20 Ge医疗系统环球技术有限公司 磁场发生器和mri装置
TW200817669A (en) * 2006-10-14 2008-04-16 Univ Nat Central Non-destructive testing method for a reinforcing bar and device thereof
US9135686B2 (en) * 2006-10-25 2015-09-15 The Invention Science Fund I Llc Distorting feature compensating
US7873234B2 (en) * 2006-11-09 2011-01-18 The Invention Science Fund I, Llc Input compensating for imaging distortion
US8041145B2 (en) 2006-11-17 2011-10-18 The Invention Science Fund I, Llc Distortion compensated imaging
US7667462B2 (en) * 2006-12-22 2010-02-23 Schlumberger Technology Corporation Nuclear magnetic resonance module
JP5535139B2 (ja) * 2011-06-30 2014-07-02 株式会社ヴァレオジャパン 近接センサ
CA3066755A1 (en) * 2014-09-05 2016-03-10 Hyperfine Research, Inc. Noise suppression methods and apparatus
US10539637B2 (en) 2016-11-22 2020-01-21 Hyperfine Research, Inc. Portable magnetic resonance imaging methods and apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239005A (ja) * 1984-05-11 1985-11-27 Sumitomo Special Metals Co Ltd 磁界発生装置
US4943774A (en) * 1989-06-01 1990-07-24 General Atomics Magnetic field control apparatus
EP0883143B1 (en) * 1996-10-30 2008-09-17 Hitachi Medical Corporation Superconducting magnetic-field generating device
JP2953659B1 (ja) * 1998-08-06 1999-09-27 住友特殊金属株式会社 Ｍｒｉ用磁界発生装置およびその組立方法並びにそれに用いる磁石ユニットの組立方法
US6448772B1 (en) * 2000-10-06 2002-09-10 Sumitomo Special Metals Co., Ltd. Magnetic field adjusting apparatus, magnetic field adjusting method and recording medium
JP2003024296A (ja) * 2001-07-04 2003-01-28 Ge Medical Systems Global Technology Co Llc 静磁界調整方法およびｍｒｉ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114496456A (zh) * 2022-03-04 2022-05-13 中车青岛四方机车车辆股份有限公司 一种集成悬浮电磁铁及直线电机、磁浮列车

Also Published As

Publication number Publication date
JP2005118566A (ja) 2005-05-12
US6809619B1 (en) 2004-10-26
EP1524531A2 (en) 2005-04-20
EP1524531A3 (en) 2005-06-15

Similar Documents

Publication Publication Date Title
US6163240A (en) Magnetic apparatus for MRI
JP2839114B2 (ja) 核磁気共鳴映像装置用永久磁石
US9055662B2 (en) Cyclotron comprising a means for modifying the magnetic field profile and associated method
CN100556359C (zh) 磁场产生装置
CN102316798A (zh) 用于磁共振成像的小型非均匀永磁场发生器
CN1611187A (zh) 用于永久mri磁场发生器的磁中心场调节系统和方法
JPH021238A (ja) 磁場勾配コイル装置およびそれを用いる磁気共鳴イメージングシステム
CN100565235C (zh) 调整磁共振成像磁场发生组件的方法和系统及磁共振成像磁场发生组件
CN100504432C (zh) 磁共振设备中的静磁场调节方法及其静磁场发生装置
CN207802493U (zh) 花瓣型加速器及其c型回转电磁铁
US20210173024A1 (en) Swaged component magnet assembly for magnetic resonance imaging
CN118501785B (zh) 一种磁共振成像永磁体
CN209343875U (zh) 磁体装置及磁共振成像设备
CN1486672A (zh) 磁场校正方法、磁场产生设备和磁共振成像设备
CN1702473B (zh) 控制静态磁场的方法和磁共振成像装置
JPH0423411A (ja) Ｍｒｉ用磁界発生装置
Varfolomeev et al. Performance of the undulator for the FOM-FEM project
JP4000555B2 (ja) 周期磁場発生装置
CN109870665B (zh) 永磁磁场发生装置、组装方法及磁共振成像设备
CN1187022C (zh) 磁共振成象磁场发生器
JP2596836B2 (ja) 磁場発生装置
KR20050018802A (ko) 자기 공명 영상 장치용 자계 발생기 및 그 조립 방법
JP3189973B2 (ja) 磁気共鳴イメージング装置
CN109872859A (zh) 磁体装置及磁共振成像设备
Sakai Magnet system for both negative-ion charge-exchange injection and positive-ion multi-turn injection

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication