JP4188244B2 - オープン型磁気共鳴画像(mri)マグネット装置 - Google Patents
オープン型磁気共鳴画像(mri)マグネット装置 Download PDFInfo
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- JP4188244B2 JP4188244B2 JP2003551556A JP2003551556A JP4188244B2 JP 4188244 B2 JP4188244 B2 JP 4188244B2 JP 2003551556 A JP2003551556 A JP 2003551556A JP 2003551556 A JP2003551556 A JP 2003551556A JP 4188244 B2 JP4188244 B2 JP 4188244B2
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- gradient coil
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- 238000002595 magnetic resonance imaging Methods 0.000 title claims description 42
- 230000005291 magnetic effect Effects 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 13
- 238000002059 diagnostic imaging Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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Classifications
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- 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
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
-
- 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
- G01R33/3856—Means for cooling the gradient coils or thermal shielding of the gradient coils
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
Claims (9)
- 相互に離間した状態で平行に延びて被写空間を定義する第1リング状主要コイル部及び第2リング状主要コイル部と、前記第1主要コイル部と第2主要コイル部とをそれぞれ収容する第1ハウジング及び第2ハウジングとを有し、少なくとも前記第1ハウジングは中央通路を有するオープン型磁気共鳴画像(MRI)マグネット装置であって、さらに前記第1主要コイル部及び前記第2主要コイル部それぞれに対応する第1傾斜磁場コイル部及び第2傾斜磁場コイルを有し、前記第1傾斜磁場コイル部及び第2傾斜磁場コイル部はそれぞれ前記対応する主要コイル部と前記被写空間との間に配置され、各傾斜磁場コイル部は機能接続を有するオープン型磁気共鳴画像(MRI)マグネット装置において、
前記第1傾斜磁場コイル部の機能接続のうちの少なくとも1つは、前記第1ハウジングの中央通路を貫通して延在し、前記第1傾斜磁場コイル部の前記少なくとも1つの機能接続は、前記第1傾斜磁場コイル部に電気的にエネルギー供給するための電気接続を含み、前記電気接続は、前記第1主要コイル部の磁力線に平行に、前記第1ハウジングの中央通路を貫通して延在することを特徴とするオープン型磁気共鳴画像(MRI)マグネット装置。 - 前記第1傾斜磁場コイル部の前記少なくとも1つの機能接続は、前記第1傾斜磁場コイル部を冷却するための冷却媒体を搬送するための冷却接続を含むことを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 前記第1傾斜磁場コイル部の前記少なくとも1つの機能接続は、前記第1傾斜磁場コイル部における前記被写空間に面していない側と接続することを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 前記第1傾斜磁場コイル部は、前記中央通路の前記被写空間に向く側を実質的に遮断することを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 前記第1傾斜磁場コイル部は、直径が10cm未満の更なる中央通路を有することを特徴とする請求項4記載のオープン型MRIマグネット装置。
- 前記第1ハウジングの中央通路の直径は50cm未満であることを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 前記第1傾斜磁場コイル部は実質的に円盤形状に形成されることを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 前記第1傾斜磁場コイル部は実質的に円錐形状に形成されることを特徴とする請求項1記載のオープン型MRIマグネット装置。
- 請求項1乃至8のいずれかに記載のオープン型MRIマグネット装置を有する医療用画像システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01204743 | 2001-12-10 | ||
PCT/IB2002/004911 WO2003050555A1 (en) | 2001-12-10 | 2002-11-20 | Open magnetic resonance imaging (mri) magnet system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005511219A JP2005511219A (ja) | 2005-04-28 |
JP4188244B2 true JP4188244B2 (ja) | 2008-11-26 |
Family
ID=8181376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003551556A Expired - Fee Related JP4188244B2 (ja) | 2001-12-10 | 2002-11-20 | オープン型磁気共鳴画像(mri)マグネット装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7193416B2 (ja) |
EP (1) | EP1459087A1 (ja) |
JP (1) | JP4188244B2 (ja) |
CN (1) | CN100501438C (ja) |
AU (1) | AU2002351020A1 (ja) |
WO (1) | WO2003050555A1 (ja) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004093681A1 (ja) * | 2003-04-23 | 2004-11-04 | Hitachi Medical Corporation | 磁気共鳴イメージング装置 |
JP4627408B2 (ja) * | 2004-04-19 | 2011-02-09 | 株式会社日立メディコ | 磁気共鳴イメージング装置 |
WO2005012932A1 (en) * | 2003-08-01 | 2005-02-10 | Koninklijke Philips Electronics N.V. | An open magnetic resonance imaging (mri) magnet system |
US7375518B2 (en) * | 2003-10-15 | 2008-05-20 | Hitachi Medical Corporation | Structure for reducing noise in magnetic resonance imaging apparatus |
CN100409022C (zh) * | 2003-12-29 | 2008-08-06 | 中国科学院电工研究所 | 一种阻抗成像方法及装置 |
DE102004024098B4 (de) * | 2004-05-14 | 2007-07-26 | Siemens Ag | Erzeuger zeitvariabler Magnetfelder für ein Magnetresonanzgerät und Magnetresonanzgerät mit einem derartigen Erzeuger zeitvariabler Magnetfelder |
US7135863B2 (en) | 2004-09-30 | 2006-11-14 | General Electric Company | Thermal management system and method for MRI gradient coil |
JP4639763B2 (ja) * | 2004-11-12 | 2011-02-23 | 三菱電機株式会社 | 磁気共鳴イメージング装置 |
US7368913B2 (en) * | 2006-06-30 | 2008-05-06 | General Electric Company | Apparatus and method of providing forced airflow to a surface of a gradient coil |
US7962019B2 (en) * | 2007-11-09 | 2011-06-14 | General Electric Company | System, method and apparatus for controlling drift of a main magnetic field in an MRI system |
US7868617B2 (en) | 2007-11-15 | 2011-01-11 | General Electric Co. | Cooling system and apparatus for controlling drift of a main magnetic field in an MRI system |
CN102272615A (zh) * | 2008-12-31 | 2011-12-07 | 皇家飞利浦电子股份有限公司 | 用于具有集成rf发送放大器的mri的梯度线圈组件 |
CN102713682B (zh) * | 2009-11-20 | 2015-01-28 | 优瑞公司 | 自屏蔽梯度线圈 |
JP2011143033A (ja) * | 2010-01-13 | 2011-07-28 | Toshiba Corp | 磁気共鳴イメージング装置 |
CN106388823B (zh) * | 2010-02-24 | 2019-11-29 | 优瑞技术公司 | 分体式磁共振成像系统 |
US8933335B2 (en) * | 2011-10-14 | 2015-01-13 | Varian Semiconductor Equipment Associates, Inc. | Current lead with a configuration to reduce heat load transfer in an alternating electrical current environment |
BR112014018600A8 (pt) * | 2012-02-01 | 2017-07-11 | Koninklijke Philips Nv | Sistema de formação de imagem por ressonância magnética, ímã para gerar um campo magnético e conjunto de comutador para um ímã supercondutor para gerar um campo magnético |
CN103035352B (zh) * | 2012-12-17 | 2015-03-18 | 中国科学院电工研究所 | 一种双平面型开放式磁共振成像超导磁体系统 |
CN103050212B (zh) * | 2013-01-09 | 2015-10-14 | 中国科学院电工研究所 | 一种开放式自屏蔽磁共振成像分裂式超导磁体系统 |
US10401445B2 (en) * | 2014-09-03 | 2019-09-03 | Koninklijke Philips N.V. | Magnetic resonance transmit and/or receive antenna system and radiotherapy planning computer program product |
CN104485507B (zh) * | 2014-12-05 | 2018-02-13 | 广州丰谱信息技术有限公司 | 一种可控的宽频磁波波束形成装置与方法 |
US10527694B2 (en) | 2015-11-12 | 2020-01-07 | General Electric Company | Magnetic resonance imaging system and an associated method thereof |
CN105467338B (zh) * | 2015-12-03 | 2018-09-18 | 沈阳东软医疗系统有限公司 | 磁共振成像系统、梯度子系统及其线缆固定装置 |
EP3364206A1 (en) * | 2017-02-20 | 2018-08-22 | Koninklijke Philips N.V. | Gradient system with controlled cooling in the individual gradient channels |
CN108646205A (zh) * | 2018-04-17 | 2018-10-12 | 杭州佩伟拓超导磁体技术有限公司 | 开放式mri微型成像系统用磁体结构 |
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-
2002
- 2002-11-20 EP EP02785730A patent/EP1459087A1/en not_active Ceased
- 2002-11-20 US US10/498,198 patent/US7193416B2/en not_active Expired - Fee Related
- 2002-11-20 AU AU2002351020A patent/AU2002351020A1/en not_active Abandoned
- 2002-11-20 WO PCT/IB2002/004911 patent/WO2003050555A1/en active Application Filing
- 2002-11-20 CN CNB028245520A patent/CN100501438C/zh not_active Expired - Fee Related
- 2002-11-20 JP JP2003551556A patent/JP4188244B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2003050555A1 (en) | 2003-06-19 |
EP1459087A1 (en) | 2004-09-22 |
CN1602431A (zh) | 2005-03-30 |
US20050068032A1 (en) | 2005-03-31 |
AU2002351020A1 (en) | 2003-06-23 |
CN100501438C (zh) | 2009-06-17 |
US7193416B2 (en) | 2007-03-20 |
JP2005511219A (ja) | 2005-04-28 |
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