JP4878174B2 - 磁気共鳴イメージング装置 - Google Patents
磁気共鳴イメージング装置 Download PDFInfo
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- JP4878174B2 JP4878174B2 JP2006047645A JP2006047645A JP4878174B2 JP 4878174 B2 JP4878174 B2 JP 4878174B2 JP 2006047645 A JP2006047645 A JP 2006047645A JP 2006047645 A JP2006047645 A JP 2006047645A JP 4878174 B2 JP4878174 B2 JP 4878174B2
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- 238000002595 magnetic resonance imaging Methods 0.000 title claims description 105
- 238000001816 cooling Methods 0.000 claims description 78
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- 238000003384 imaging method Methods 0.000 claims description 16
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- 230000005484 gravity Effects 0.000 description 10
- 230000002411 adverse Effects 0.000 description 8
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- 238000000034 method Methods 0.000 description 7
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- 230000000694 effects Effects 0.000 description 4
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- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
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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
- 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
- G01R33/3802—Manufacture or installation of magnet assemblies; Additional hardware for transportation or installation of the magnet assembly or for providing mechanical support to components of the magnet assembly
-
- 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
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
-
- 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
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- 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
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems
-
- 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
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
2 超伝導コイル(静磁場発生源)
4 冷却容器
5 真空容器
7 冷却容器連結管
11 真空容器連結管
22 垂直方向支持部材
25 支持脚
28 装置底面
F 設置床面
S MRI装置
Claims (3)
- 撮影空間を挟んで上下に対向配置された静磁場発生源を有する磁気共鳴イメージング装 置において、
所定のばね定数で支持荷重方向に弾性変形可能に形成され、所定の配置状態で配置され る4個以上の支持脚を装置底面と設置床面の間に介在させて設置すると共に、前記静磁場 発生源を支持する構造について水平方向で相対的に構造強度の異なる高構造強度方向と低 構造強度方向を直交状態で有し、前記4個以上の支持脚のうちの4個がそれぞれ前記高構 造強度方向の座標軸に対して25〜45度となる位置に配置されており、
前記静磁場発生源である超伝導コイル、前記超伝導コイルを収納する冷却容器を含む冷 却容器モジュール、および前記冷却容器を収納する真空容器を含む真空容器モジュールを 備え、前記冷却容器モジュールは、前記真空容器モジュールの底から立ち上がるようにし て設けられるとともに所定の配置状態で設けられた4個の支持部材を介して前記真空容器 モジュールに支持されており、
かつ、前記4個の支持部材の配置位置が前記4個以上の支持脚のうちの前記高構造強度 方向の座標軸に対して25〜45度となる位置に配置されている4個の配置位置と一致させられていることを特徴とする磁気共鳴イメージング装置。 - 前記支持脚のばね定数は、設置荷重を受けた状態で前記支持脚が前記装置底面と前記設置床面の相対変位程度変形できるように設定される請求項1に記載の磁気共鳴イメージング装置。
- 前記支持脚は、それぞればね定数が異なる第1の部材と第2の部材を重ねて構成される請求項1または請求項2に記載の磁気共鳴イメージング装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006047645A JP4878174B2 (ja) | 2006-02-24 | 2006-02-24 | 磁気共鳴イメージング装置 |
EP07250650A EP1826582A3 (en) | 2006-02-24 | 2007-02-15 | MRI apparatus involving damping of vibrations |
CN2007100788429A CN101025438B (zh) | 2006-02-24 | 2007-02-16 | 磁共振成像装置 |
US11/676,717 US7432712B2 (en) | 2006-02-24 | 2007-02-20 | Magnetic resonance imaging apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006047645A JP4878174B2 (ja) | 2006-02-24 | 2006-02-24 | 磁気共鳴イメージング装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007222431A JP2007222431A (ja) | 2007-09-06 |
JP4878174B2 true JP4878174B2 (ja) | 2012-02-15 |
Family
ID=38007952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006047645A Active JP4878174B2 (ja) | 2006-02-24 | 2006-02-24 | 磁気共鳴イメージング装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7432712B2 (ja) |
EP (1) | EP1826582A3 (ja) |
JP (1) | JP4878174B2 (ja) |
CN (1) | CN101025438B (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8598881B2 (en) | 2011-01-11 | 2013-12-03 | General Electric Company | Magnetic resonance imaging system with thermal reservoir and method for cooling |
US9279871B2 (en) * | 2011-12-20 | 2016-03-08 | General Electric Company | System and apparatus for compensating for magnetic field distortion in an MRI system |
US9322892B2 (en) | 2011-12-20 | 2016-04-26 | General Electric Company | System for magnetic field distortion compensation and method of making same |
EP2674773A1 (en) * | 2012-06-12 | 2013-12-18 | Koninklijke Philips N.V. | Oscillation applicator for MR rheology |
US9274188B2 (en) | 2012-11-30 | 2016-03-01 | General Electric Company | System and apparatus for compensating for magnetic field distortion in an MRI system |
US9355767B2 (en) * | 2014-09-03 | 2016-05-31 | Uchicago Argonne, Llc | Undulator with dynamic compensation of magnetic forces |
JP6546115B2 (ja) * | 2016-03-30 | 2019-07-17 | ジャパンスーパーコンダクタテクノロジー株式会社 | 超電導マグネット装置 |
JP6602716B2 (ja) * | 2016-03-30 | 2019-11-06 | ジャパンスーパーコンダクタテクノロジー株式会社 | 超電導マグネット装置 |
JP7299725B2 (ja) | 2019-03-15 | 2023-06-28 | キヤノントッキ株式会社 | 成膜装置、成膜システム |
US11442124B2 (en) | 2019-09-26 | 2022-09-13 | Shanghai United Imaging Healthcare Co., Ltd. | Superconducting magnet |
CN112992465B (zh) * | 2019-12-13 | 2023-03-14 | 上海联影医疗科技股份有限公司 | 超导磁体及磁共振成像*** |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3566185D1 (en) * | 1984-04-11 | 1988-12-15 | Sumitomo Spec Metals | Magnetic field generating device for nmr-ct |
US5016638A (en) * | 1989-03-01 | 1991-05-21 | Hsieh Chi H | Vibration control in NMR magnet structures |
US5003276A (en) * | 1989-08-11 | 1991-03-26 | General Atomics | Method of site shimming on permanent magnets |
US5548653A (en) * | 1992-02-14 | 1996-08-20 | General Electric Company | Active control of noise and vibrations in magnetic resonance imaging systems using vibrational inputs |
US5237300A (en) * | 1992-08-03 | 1993-08-17 | General Electric Company | Support structure for actively shielded superconducting magnets |
US5410287A (en) * | 1994-04-05 | 1995-04-25 | General Electric Company | Open MRI magnet with uniform magnetic field |
US6375147B1 (en) * | 1999-09-13 | 2002-04-23 | General Electric Company | Vibration isolation apparatus for MR imaging system |
US6556012B2 (en) * | 2000-01-21 | 2003-04-29 | Kabushiki Kaisha Toshiba | Magnetic resonance imaging apparatus |
JP4118015B2 (ja) * | 2000-11-22 | 2008-07-16 | 株式会社日立メディコ | 超電導磁石装置及びこれを用いた磁気共鳴イメージング装置 |
JP3866935B2 (ja) * | 2001-06-08 | 2007-01-10 | 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 | 磁気共鳴撮影装置 |
DE10143048C1 (de) * | 2001-09-03 | 2003-04-17 | Siemens Ag | Magnet-Resonanz-Tomographiegerät mit Lärmunterdrückung durch Dämpfung von mechanischen Schwingungen |
US7345559B2 (en) * | 2001-09-13 | 2008-03-18 | General Electric Company | High field open MRI magnet isolation system and method |
US7093815B2 (en) * | 2001-10-29 | 2006-08-22 | Hitachi Medical Systems America, Inc. | Vibration quenching substrate for diagnostic equipment susceptible to vibrations |
JP3891947B2 (ja) * | 2003-03-07 | 2007-03-14 | 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 | 磁気共鳴撮影装置 |
JP3891573B2 (ja) * | 2003-09-30 | 2007-03-14 | 三菱電機株式会社 | Mri電磁石装置 |
JP4341375B2 (ja) * | 2003-11-06 | 2009-10-07 | 株式会社日立製作所 | 磁気共鳴イメージング装置 |
JP3790971B2 (ja) * | 2004-06-23 | 2006-06-28 | 株式会社日立製作所 | 磁気共鳴イメージング装置 |
US7631411B2 (en) * | 2004-06-28 | 2009-12-15 | General Electric Company | Method of manufacturing support structure for open MRI |
-
2006
- 2006-02-24 JP JP2006047645A patent/JP4878174B2/ja active Active
-
2007
- 2007-02-15 EP EP07250650A patent/EP1826582A3/en not_active Withdrawn
- 2007-02-16 CN CN2007100788429A patent/CN101025438B/zh active Active
- 2007-02-20 US US11/676,717 patent/US7432712B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20070210795A1 (en) | 2007-09-13 |
EP1826582A2 (en) | 2007-08-29 |
CN101025438A (zh) | 2007-08-29 |
EP1826582A3 (en) | 2010-03-24 |
CN101025438B (zh) | 2010-05-26 |
JP2007222431A (ja) | 2007-09-06 |
US7432712B2 (en) | 2008-10-07 |
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