DE69524716D1 - Verfahren und anordnung zur fieldverformungskompensation in einer magnetischen struktur unter benutzung eines raumfilters - Google Patents
Verfahren und anordnung zur fieldverformungskompensation in einer magnetischen struktur unter benutzung eines raumfiltersInfo
- Publication number
- DE69524716D1 DE69524716D1 DE69524716T DE69524716T DE69524716D1 DE 69524716 D1 DE69524716 D1 DE 69524716D1 DE 69524716 T DE69524716 T DE 69524716T DE 69524716 T DE69524716 T DE 69524716T DE 69524716 D1 DE69524716 D1 DE 69524716D1
- Authority
- DE
- Germany
- Prior art keywords
- compensation
- arrangement
- magnetic structure
- space filter
- deform
- 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 - Lifetime
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
- G01R33/387—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
- G01R33/3806—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
- G01R33/383—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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/228,291 US5475355A (en) | 1994-04-15 | 1994-04-15 | Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter |
PCT/US1995/004779 WO1995028657A1 (en) | 1994-04-15 | 1995-04-12 | Method and apparatus for compensation of field distortion in a magnetic structure using spatial filter |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69524716D1 true DE69524716D1 (de) | 2002-01-31 |
DE69524716T2 DE69524716T2 (de) | 2002-07-18 |
Family
ID=22856560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69524716T Expired - Lifetime DE69524716T2 (de) | 1994-04-15 | 1995-04-12 | Verfahren und anordnung zur fieldverformungskompensation in einer magnetischen struktur unter benutzung eines raumfilters |
Country Status (7)
Country | Link |
---|---|
US (1) | US5475355A (de) |
EP (1) | EP0714521B1 (de) |
JP (1) | JP3577552B2 (de) |
AU (1) | AU2388595A (de) |
DE (1) | DE69524716T2 (de) |
ES (1) | ES2165419T3 (de) |
WO (1) | WO1995028657A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5495222A (en) * | 1994-04-15 | 1996-02-27 | New York University | Open permanent magnet structure for generating highly uniform field |
US5798680A (en) * | 1994-04-15 | 1998-08-25 | New York University | Strapped open magnetic structure |
US6225887B1 (en) | 1996-11-22 | 2001-05-01 | New York University | Generation of highly uniform magnetic fields with magnetized wedges |
JP3963227B2 (ja) * | 1997-06-13 | 2007-08-22 | ミライアル株式会社 | 蓋付き薄板収納容器 |
US6411187B1 (en) | 1997-07-23 | 2002-06-25 | Odin Medical Technologies, Ltd. | Adjustable hybrid magnetic apparatus |
EP1018036A4 (de) | 1997-09-25 | 2002-04-10 | Odin Technologies Ltd | Magnetisches gerät zur bilderzeugung durch magnetische resonanz |
IT1298022B1 (it) * | 1997-12-05 | 1999-12-20 | Esaote Spa | Magnete permanente per il rilevamento d'immagini in risonaza magnetica nucleare. |
JP2002502648A (ja) * | 1998-02-09 | 2002-01-29 | オーディン・メディカル・テクノロジーズ・リミテッド | Mri又はmrtプローブで使用するための開いた磁石及び開いた磁気装置を設計するための方法 |
US6265959B1 (en) | 1998-04-29 | 2001-07-24 | New York University | Open unipolar magnetic structure |
US6259252B1 (en) * | 1998-11-24 | 2001-07-10 | General Electric Company | Laminate tile pole piece for an MRI, a method manufacturing the pole piece and a mold bonding pole piece tiles |
KR100319923B1 (ko) * | 1999-05-10 | 2002-01-09 | 윤종용 | 자기공명영상장치용 자기장 발생 장치 |
US6556009B2 (en) * | 2000-12-11 | 2003-04-29 | The United States Of America As Represented By The Department Of Health And Human Services | Accelerated magnetic resonance imaging using a parallel spatial filter |
AU2003269469A1 (en) * | 2002-10-21 | 2004-05-04 | Bbms Ltd. | Method and apparatus for magnetic resonance analysis |
US7019609B2 (en) * | 2004-06-21 | 2006-03-28 | General Electric Company | Magnetic field generating device and method of shimming thereof |
JP5149004B2 (ja) * | 2005-07-08 | 2013-02-20 | 株式会社日立メディコ | 磁気共鳴イメージング装置 |
US7199689B1 (en) * | 2006-01-09 | 2007-04-03 | Brk Wireless Company, Inc | High field NMR permanent magnetic structure |
JP5278903B2 (ja) * | 2006-04-14 | 2013-09-04 | 株式会社日立メディコ | 磁気共鳴イメージング装置及び傾斜磁場コイル |
US20090195248A1 (en) * | 2008-02-01 | 2009-08-06 | Wang Nmr Inc. | Table-top magnetic resonance imaging apparatus with permanent magnet |
IT1395836B1 (it) | 2009-10-09 | 2012-10-26 | Esaote Spa | Metodo per la realizzazione di un magnete permanente in particolare per scanner mri ed un magnete permanente, in particolare per scanner mri realizzato con detto metodo |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2605452B1 (fr) * | 1986-10-17 | 1988-12-02 | Thomson Cgr | Aimant permanent spherique a acces equatorial |
US4943774A (en) * | 1989-06-01 | 1990-07-24 | General Atomics | Magnetic field control apparatus |
JPH03131234A (ja) * | 1989-07-07 | 1991-06-04 | Sumitomo Special Metals Co Ltd | Mri用磁界発生装置 |
US5162770A (en) * | 1990-02-22 | 1992-11-10 | Esaote Biomedica | Terminations of cylindrical permanent magnets |
US5162771A (en) * | 1990-10-01 | 1992-11-10 | New York University | Highly efficient yoked permanent magnet |
US5107239A (en) * | 1991-05-30 | 1992-04-21 | New York University | Hybrid permanent magnets |
US5216401A (en) * | 1992-06-02 | 1993-06-01 | The United States Of America As Represented By The Secretary Of The Army | Magnetic field sources having non-distorting access ports |
JP2757104B2 (ja) * | 1993-04-01 | 1998-05-25 | 信越化学工業株式会社 | 磁場発生装置 |
US5396209A (en) * | 1994-02-16 | 1995-03-07 | The United States Of America As Represented By The Secretary Of The Army | Light-weight magnetic field sources having distortion-free access ports |
-
1994
- 1994-04-15 US US08/228,291 patent/US5475355A/en not_active Expired - Lifetime
-
1995
- 1995-04-12 WO PCT/US1995/004779 patent/WO1995028657A1/en active IP Right Grant
- 1995-04-12 JP JP52716995A patent/JP3577552B2/ja not_active Expired - Fee Related
- 1995-04-12 EP EP95917046A patent/EP0714521B1/de not_active Expired - Lifetime
- 1995-04-12 AU AU23885/95A patent/AU2388595A/en not_active Abandoned
- 1995-04-12 ES ES95917046T patent/ES2165419T3/es not_active Expired - Lifetime
- 1995-04-12 DE DE69524716T patent/DE69524716T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AU2388595A (en) | 1995-11-10 |
JPH08511980A (ja) | 1996-12-17 |
US5475355A (en) | 1995-12-12 |
EP0714521A1 (de) | 1996-06-05 |
DE69524716T2 (de) | 2002-07-18 |
ES2165419T3 (es) | 2002-03-16 |
EP0714521B1 (de) | 2001-12-19 |
JP3577552B2 (ja) | 2004-10-13 |
WO1995028657A1 (en) | 1995-10-26 |
EP0714521A4 (de) | 1997-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |