DE69225564T2 - Magnetische Resonanzanordnung - Google Patents
Magnetische ResonanzanordnungInfo
- Publication number
- DE69225564T2 DE69225564T2 DE69225564T DE69225564T DE69225564T2 DE 69225564 T2 DE69225564 T2 DE 69225564T2 DE 69225564 T DE69225564 T DE 69225564T DE 69225564 T DE69225564 T DE 69225564T DE 69225564 T2 DE69225564 T2 DE 69225564T2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic resonance
- resonance arrangement
- arrangement
- magnetic
- resonance
- 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
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
- G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
-
- 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
-
- 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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91203131 | 1991-11-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69225564D1 DE69225564D1 (de) | 1998-06-25 |
DE69225564T2 true DE69225564T2 (de) | 1998-11-26 |
Family
ID=8208043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69225564T Expired - Fee Related DE69225564T2 (de) | 1991-11-29 | 1992-11-23 | Magnetische Resonanzanordnung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5359289A (de) |
EP (1) | EP0545465B1 (de) |
JP (1) | JPH05269097A (de) |
DE (1) | DE69225564T2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5490509A (en) * | 1993-03-18 | 1996-02-13 | The Regents Of The University Of California | Method and apparatus for MRI using selectively shaped image volume of homogeneous NMR polarizing field |
DE4437443C2 (de) * | 1994-10-19 | 1996-09-12 | Siemens Ag | Verfahren zum Betrieb eines Kernspintomographiegerätes mit dynamisch lokalisierter Shimmung des Grundmagnetfeldes |
DE19511791C1 (de) * | 1995-03-30 | 1996-08-22 | Siemens Ag | Verfahren zur Shimmung eines Magnetsystems eines Kernspintomographen und Vorrichtung zur Durchführung des Verfahrens |
US6064208A (en) * | 1998-04-02 | 2000-05-16 | Picker International, Inc. | Two-peak alignment method of field shimming |
DE19954926C2 (de) * | 1999-11-16 | 2001-09-13 | Bruker Medical Gmbh | Verfahren zum Korrigieren linearer Feldinhomogenitäten in einer Apparatur der magnetischen Resonanz |
EP1157281A1 (de) * | 1999-12-20 | 2001-11-28 | Koninklijke Philips Electronics N.V. | Gerät der bildgebenden magnetischen resonanz mit flexibler steuerung der gradienten |
JP3858191B2 (ja) * | 2000-10-31 | 2006-12-13 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Mri装置 |
DE20109058U1 (de) * | 2001-05-31 | 2002-10-10 | Deltamed Gmbh | Vorrichtung zur Behandlung mit magnetischen Feldern |
JP5566298B2 (ja) | 2007-11-08 | 2014-08-06 | コーニンクレッカ フィリップス エヌ ヴェ | Mri参照スキャンを実行する方法 |
DE102011080275B4 (de) * | 2011-08-02 | 2018-10-25 | Siemens Healthcare Gmbh | Lokalspule, insbesondere Halsspule, mit mehreren separat schaltbaren Lokalspulen- Shimspulen |
CN104471421B (zh) * | 2012-06-28 | 2018-11-06 | 杜克大学 | 用于集成并行接收、激励和匀场的磁谐振成像***以及相关方法和设备 |
DE102013202217B4 (de) * | 2013-02-12 | 2015-05-28 | Siemens Aktiengesellschaft | MR-Anlage mit gepulsten Ausgleichsmagnetfeldgradienten |
EP3699623B1 (de) * | 2019-02-25 | 2022-02-23 | Siemens Healthcare GmbH | Mehrschicht-magnetresonanzbildgebung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60161552A (ja) * | 1984-02-01 | 1985-08-23 | Hitachi Ltd | Νmr検査装置の静磁場強度分布測定方法 |
US4677318A (en) * | 1985-04-12 | 1987-06-30 | Altera Corporation | Programmable logic storage element for programmable logic devices |
JPH0747023B2 (ja) * | 1986-07-14 | 1995-05-24 | 株式会社日立製作所 | 核磁気共鳴を用いた検査装置 |
US4899109A (en) * | 1988-08-17 | 1990-02-06 | Diasonics Inc. | Method and apparatus for automated magnetic field shimming in magnetic resonance spectroscopic imaging |
NL8900990A (nl) * | 1989-04-20 | 1990-11-16 | Philips Nv | Werkwijze voor het bepalen van een kernmagnetisatieverdeling van een deelvolume van een object, werkwijze voor het homogeniseren van een deel van een stationair veld waarin het object zich bevindt, en magnetische resonantieinrichting voor het uitvoeren van een dergelijke werkwijze. |
US4987371A (en) * | 1989-11-27 | 1991-01-22 | General Electric Company | Method for in-vivo shimming |
US5168232A (en) * | 1990-06-29 | 1992-12-01 | General Electric Company | Method for rapid magnet shimming |
-
1992
- 1992-11-23 DE DE69225564T patent/DE69225564T2/de not_active Expired - Fee Related
- 1992-11-23 EP EP92203602A patent/EP0545465B1/de not_active Expired - Lifetime
- 1992-11-25 US US07/981,739 patent/US5359289A/en not_active Expired - Lifetime
- 1992-11-26 JP JP4317188A patent/JPH05269097A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0545465B1 (de) | 1998-05-20 |
US5359289A (en) | 1994-10-25 |
EP0545465A1 (de) | 1993-06-09 |
DE69225564D1 (de) | 1998-06-25 |
JPH05269097A (ja) | 1993-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N |
|
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |