NL8502340A - Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. - Google Patents
Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. Download PDFInfo
- Publication number
- NL8502340A NL8502340A NL8502340A NL8502340A NL8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A NL 8502340 A NL8502340 A NL 8502340A
- Authority
- NL
- Netherlands
- Prior art keywords
- magnetic
- field
- resonance device
- magnetic resonance
- magnetic material
- Prior art date
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
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8502340A NL8502340A (nl) | 1985-08-26 | 1985-08-26 | Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. |
US06/891,849 US4771243A (en) | 1985-08-26 | 1986-08-01 | Magnetic resonance imaging apparatus including field-homogenizing magnetic elements |
EP86201372A EP0216404B1 (en) | 1985-08-26 | 1986-08-04 | Magnetic resonance imaging apparatus including-homogenizing magnetic elements |
DE8686201372T DE3669786D1 (de) | 1985-08-26 | 1986-08-04 | Apparat zur bilderzeugung mittels magnetischer resonanz mit homogenisierenden magnetischen elementen. |
FI863407A FI863407A (fi) | 1985-08-26 | 1986-08-22 | Magnetisk resonansavbildningsapparat innehaollande magnetiska element avsedda foer faelthomogenisering. |
IL79831A IL79831A (en) | 1985-08-26 | 1986-08-25 | Magnetic resonance imaging apparatus including field-homogenizing magnetic elements |
JP61198281A JPH0763457B2 (ja) | 1985-08-26 | 1986-08-26 | 磁気共鳴イメ−ジング装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8502340 | 1985-08-26 | ||
NL8502340A NL8502340A (nl) | 1985-08-26 | 1985-08-26 | Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. |
Publications (1)
Publication Number | Publication Date |
---|---|
NL8502340A true NL8502340A (nl) | 1987-03-16 |
Family
ID=19846468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8502340A NL8502340A (nl) | 1985-08-26 | 1985-08-26 | Magnetisch resonantie apparaat met veld homogeniserende magnetische elementen. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4771243A (ja) |
EP (1) | EP0216404B1 (ja) |
JP (1) | JPH0763457B2 (ja) |
DE (1) | DE3669786D1 (ja) |
FI (1) | FI863407A (ja) |
IL (1) | IL79831A (ja) |
NL (1) | NL8502340A (ja) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2184243B (en) * | 1985-12-09 | 1989-12-20 | Picker Int Ltd | Electromagnet arrangements |
WO1988008126A1 (en) * | 1987-04-15 | 1988-10-20 | Oxford Magnet Technology Limited | Magnetic field generating apparatus |
DE3866060D1 (de) * | 1987-08-14 | 1991-12-12 | Siemens Ag | Elektrischer magnet fuer kernspin-thomographen. |
FR2623324A1 (fr) * | 1987-11-13 | 1989-05-19 | Thomson Cgr | Dispositif d'imagerie rmn, procede de correction d'inhomogeneite et procede de realisation d'aimants mis en oeuvre dans le dispositif |
US4881035A (en) * | 1987-11-24 | 1989-11-14 | Siemens Aktiengesellschaft | Magnetic structural arrangement of an installation for nuclear magnetic resonance tomography with superconducting background field coils and normal-conducting gradient coils |
GB8808334D0 (en) * | 1988-04-08 | 1988-05-11 | Magnex Scient Ltd | Electromagnets |
JPH0690975B2 (ja) * | 1988-06-03 | 1994-11-14 | 三菱電機株式会社 | 磁場補正用磁性体シム |
US4853663A (en) * | 1988-12-22 | 1989-08-01 | General Electric Company | Passive shims for correction of (3,2) and (3,-2) harmonic terms in magnetic resonance magnets |
GB8912601D0 (en) * | 1989-06-01 | 1989-07-19 | Oxford Magnet Tech | Magnetic field generating apparatus |
US5001447A (en) * | 1989-08-23 | 1991-03-19 | General Electric Company | Ferromagnetic compensation rings for high field strength magnets |
NL9001300A (nl) * | 1990-06-08 | 1992-01-02 | Koninkl Philips Electronics Nv | Magneetstelsel voor magnetische resonantie. |
GB9105286D0 (en) * | 1991-03-13 | 1991-04-24 | Oxford Instr Ltd | Magnetic field generating apparatus |
US5317298A (en) * | 1993-01-04 | 1994-05-31 | General Electric Company | Apparatus and method for passive shimming of a superconducting magnet which images human limbs |
GB2276945B (en) * | 1993-04-08 | 1997-02-26 | Oxford Magnet Tech | Improvements in or relating to MRI magnets |
BE1007783A3 (nl) * | 1993-11-25 | 1995-10-17 | Philips Electronics Nv | Magnetisch resonantie apparaat met elementen voor het homogeniseren van het magneetveld. |
GB9407309D0 (en) * | 1994-04-13 | 1994-06-08 | Oxford Magnet Tech | Improvements in or relating to magnetic resonance imaging apparatus |
EP0677751B1 (en) * | 1994-04-13 | 2000-10-18 | Oxford Magnet Technology Limited | Improvements in or relating to magnetic resonance imaging apparatus |
DE4412755C2 (de) * | 1994-04-13 | 1996-09-05 | Bruker Analytische Messtechnik | Magnetsystem für die NMR-Tomographie |
US5532597A (en) * | 1994-11-04 | 1996-07-02 | Picker International, Inc. | Passive shimming technique for MRI magnets |
US5635839A (en) * | 1994-11-04 | 1997-06-03 | Picker International, Inc. | High order passive shimming assembly for MRI magnets |
US5550472A (en) * | 1995-04-13 | 1996-08-27 | Picker International, Inc. | Combined radio frequency coil with integral magnetic field shim set |
JP3663262B2 (ja) * | 1995-10-23 | 2005-06-22 | ゼネラル・エレクトリック・カンパニイ | 開放形磁気共鳴作像磁石 |
US5568102A (en) * | 1996-02-20 | 1996-10-22 | General Electric Company | Closed superconductive magnet with homogeneous imaging volume |
US5594401A (en) * | 1996-02-20 | 1997-01-14 | General Electric Company | Closed superconductive magnet with uniform imaging volume |
JP3585141B2 (ja) * | 1996-04-05 | 2004-11-04 | 株式会社日立メディコ | 超電導磁石装置 |
US5721523A (en) * | 1996-08-26 | 1998-02-24 | General Electric Company | Compact MRI superconducting magnet |
EP0826978A1 (en) * | 1996-08-26 | 1998-03-04 | General Electric Company | Closed MRI magnet having compact design |
DE60230561D1 (de) * | 2001-05-17 | 2009-02-12 | Mitsubishi Electric Corp | Supraleitender Magnet für die bildgebende magnetische Resonanz |
US6861933B1 (en) | 2001-05-17 | 2005-03-01 | Mitsubishi Denki Kabushiki Kaisha | Superconductive magnet device |
US7508208B2 (en) * | 2004-03-03 | 2009-03-24 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging scanner with booster iron |
CN101019036A (zh) * | 2004-06-17 | 2007-08-15 | 皇家飞利浦电子股份有限公司 | 带有铁辅助磁场梯度系统的磁共振成像系统 |
CN103442635B (zh) * | 2011-03-25 | 2016-01-20 | 株式会社日立医疗器械 | 静磁场均匀度的调整方法、磁共振成像用静磁场产生装置、磁场调整系统、程序 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123493A1 (de) * | 1981-06-13 | 1982-12-30 | Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten | Elektromagnet fuer die nmr-tomographie |
JPS5960346A (ja) * | 1982-09-30 | 1984-04-06 | Toshiba Corp | 磁気共鳴イメージング装置用傾斜磁場コイルユニット |
DE3245945A1 (de) * | 1982-12-11 | 1984-06-14 | Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten | Elektromagnet fuer die nmr-tomographie |
US4591789A (en) * | 1983-12-23 | 1986-05-27 | General Electric Company | Method for correcting image distortion due to gradient nonuniformity |
GB8402360D0 (en) * | 1984-01-30 | 1984-02-29 | Picker Int Ltd | Nmr shims |
JPS60189905A (ja) * | 1984-03-09 | 1985-09-27 | Mitsubishi Electric Corp | 高均一磁界発生装置 |
GB8407098D0 (en) * | 1984-03-19 | 1984-04-26 | Picker Int Ltd | Nuclear magnetic resonance apparatus |
US4506247A (en) * | 1984-05-23 | 1985-03-19 | General Electric Company | Axisymmetric correction coil system for NMR magnets |
DE8419763U1 (de) * | 1984-07-02 | 1986-03-20 | Siemens AG, 1000 Berlin und 8000 München | Kernspin-Tomographiegerät |
-
1985
- 1985-08-26 NL NL8502340A patent/NL8502340A/nl not_active Application Discontinuation
-
1986
- 1986-08-01 US US06/891,849 patent/US4771243A/en not_active Expired - Fee Related
- 1986-08-04 EP EP86201372A patent/EP0216404B1/en not_active Expired
- 1986-08-04 DE DE8686201372T patent/DE3669786D1/de not_active Expired - Lifetime
- 1986-08-22 FI FI863407A patent/FI863407A/fi not_active IP Right Cessation
- 1986-08-25 IL IL79831A patent/IL79831A/xx unknown
- 1986-08-26 JP JP61198281A patent/JPH0763457B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4771243A (en) | 1988-09-13 |
IL79831A (en) | 1990-08-31 |
FI863407A (fi) | 1987-02-27 |
DE3669786D1 (de) | 1990-04-26 |
JPH0763457B2 (ja) | 1995-07-12 |
EP0216404A1 (en) | 1987-04-01 |
IL79831A0 (en) | 1986-11-30 |
FI863407A0 (fi) | 1986-08-22 |
EP0216404B1 (en) | 1990-03-21 |
JPS6247349A (ja) | 1987-03-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1B | A search report has been drawn up | ||
BV | The patent application has lapsed |