CN101290344B - 用于成像磁体的改进式匀场 - Google Patents
用于成像磁体的改进式匀场 Download PDFInfo
- Publication number
- CN101290344B CN101290344B CN200810093332.3A CN200810093332A CN101290344B CN 101290344 B CN101290344 B CN 101290344B CN 200810093332 A CN200810093332 A CN 200810093332A CN 101290344 B CN101290344 B CN 101290344B
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- CN
- China
- Prior art keywords
- coil
- imaging
- shimming
- imaging region
- volume
- 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 - Fee Related
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 132
- 238000002595 magnetic resonance imaging Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012938 design process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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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
-
- 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)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0707485A GB2448479B (en) | 2007-04-18 | 2007-04-18 | Improved shim for imaging magnets |
GB0707485.9 | 2007-04-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101290344A CN101290344A (zh) | 2008-10-22 |
CN101290344B true CN101290344B (zh) | 2013-01-30 |
Family
ID=38116944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200810093332.3A Expired - Fee Related CN101290344B (zh) | 2007-04-18 | 2008-04-18 | 用于成像磁体的改进式匀场 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7714580B2 (zh) |
JP (1) | JP5311868B2 (zh) |
CN (1) | CN101290344B (zh) |
GB (1) | GB2448479B (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5198805B2 (ja) * | 2007-06-25 | 2013-05-15 | 株式会社日立製作所 | 能動磁気遮蔽型磁石装置および磁気共鳴イメージング装置 |
KR20110117708A (ko) * | 2009-02-18 | 2011-10-27 | 가부시키가이샤 브리지스톤 | 타이어 |
CN101995560B (zh) * | 2009-08-31 | 2013-11-06 | 西门子(深圳)磁共振有限公司 | 对磁场均匀性不足进行补偿的方法和装置 |
US8604793B2 (en) * | 2010-10-21 | 2013-12-10 | General Electric Company | Superconducting magnet having cold iron shimming capability |
CN102621509B (zh) | 2011-01-26 | 2014-11-26 | 西门子(深圳)磁共振有限公司 | 一种匀场装置的校正方法及装置 |
US8981778B2 (en) | 2011-04-26 | 2015-03-17 | General Electric Company | Method and apparatus for imaging a patient using local shim coils |
CN102360690A (zh) * | 2011-06-14 | 2012-02-22 | 中国科学院电工研究所 | 一种自屏蔽开放式磁共振成像超导磁体 |
DE102011086658B3 (de) | 2011-11-18 | 2013-03-28 | Siemens Aktiengesellschaft | Von Gradienten unabhängige Shimspule für eine Lokalspule einer Magnetresonanzeinrichtung, Lokalspule, Magnetresonanzeinrichtung, sowie Verfahren zur Platzierung einer Shimspuleneinrichtung |
CN103065758B (zh) * | 2013-01-25 | 2015-07-15 | 中国科学院电工研究所 | 一种超短腔自屏蔽磁共振成像超导磁体 |
CN104267359B (zh) * | 2014-10-20 | 2017-12-15 | 包头市稀宝博为医疗系统有限公司 | 一种用于磁共振成像中的梯度线圈 |
US10024936B2 (en) * | 2014-12-09 | 2018-07-17 | Synaptive Medical (Barbados) Inc. | System and method for electromagnet coil construction |
JP6647314B2 (ja) | 2015-04-10 | 2020-02-14 | シナプティヴ メディカル (バルバドス) インコーポレイテッドSynaptive Medical (Barbados) Inc. | 核磁気共鳴画像用のシムコイル及び方法 |
CN108369261B (zh) | 2015-11-06 | 2021-07-16 | 西达-赛奈医疗中心 | 用于下一代磁共振线圈的联合线圈(unic)系统和方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2276945B (en) * | 1993-04-08 | 1997-02-26 | Oxford Magnet Tech | Improvements in or relating to MRI magnets |
US5646532A (en) * | 1993-09-20 | 1997-07-08 | Bruker Medizintechnik Gmbh | Partial body tomograph |
US6147495A (en) * | 1998-08-28 | 2000-11-14 | Picker International, Inc. | Magnetic resonance imaging with integrated poleface features |
US6462548B1 (en) * | 2001-07-09 | 2002-10-08 | Ge Medical Systems Global Technology Company | Open architecture magnetic reasonance superconducting platform magnet conical imaging |
US6822451B2 (en) * | 2002-07-31 | 2004-11-23 | Ge Medical Systems Global Technology Company Llc | Non-coupling magnetic sheilding coil |
EP1704420A1 (en) * | 2003-10-30 | 2006-09-27 | Koninklijke Philips Electronics N.V. | Mri system with variable field of view magnet |
US6975116B2 (en) * | 2003-11-26 | 2005-12-13 | Ge Medical Systems Global Technology Company, Llc | Method and apparatus for multiple field of view gradient coils |
WO2005091012A1 (en) * | 2004-03-17 | 2005-09-29 | Koninklijke Philips Electronics N.V. | Dynamic shimset calibration for b0 offset |
WO2006088453A1 (en) * | 2005-02-15 | 2006-08-24 | Zhao, Lei | Method of using a small mri scanner |
JP5143006B2 (ja) * | 2005-10-03 | 2013-02-13 | マサチューセッツ インスティテュート オブ テクノロジー | 磁気の共鳴スペクトルを得るための輪状磁石を使ったシステム |
DE102008020107B4 (de) * | 2008-04-22 | 2011-08-25 | Bruker BioSpin GmbH, 76287 | Kompakte supraleitende Magnetanordnung mit aktiver Abschirmung, wobei die Abschirmspule zur Feldformung eingesetzt wird |
-
2007
- 2007-04-18 GB GB0707485A patent/GB2448479B/en not_active Expired - Fee Related
-
2008
- 2008-03-06 US US12/043,638 patent/US7714580B2/en not_active Expired - Fee Related
- 2008-04-17 JP JP2008107919A patent/JP5311868B2/ja not_active Expired - Fee Related
- 2008-04-18 CN CN200810093332.3A patent/CN101290344B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008264543A (ja) | 2008-11-06 |
GB0707485D0 (en) | 2007-05-23 |
US7714580B2 (en) | 2010-05-11 |
US20080258729A1 (en) | 2008-10-23 |
CN101290344A (zh) | 2008-10-22 |
JP5311868B2 (ja) | 2013-10-09 |
GB2448479A (en) | 2008-10-22 |
GB2448479B (en) | 2009-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
ASS | Succession or assignment of patent right |
Owner name: ENGLAND SIEMENS AG Free format text: FORMER OWNER: SIEMENS MAGNET TECHNOLOGY LTD. Effective date: 20091113 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20091113 Address after: Britain's Applicant after: Siemens PLC Address before: oxford Applicant before: Siemens Magnet Technology Ltd. |
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170124 Address after: surrey Patentee after: SIEMENS AG Address before: Britain's Patentee before: Siemens PLC |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20200418 |