JP2008136868A - 低うず電流真空容器及びその製作方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000002595 magnetic resonance imaging Methods 0.000 claims description 32
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- 125000006850 spacer group Chemical group 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
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- 238000003466 welding Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure
- F17C13/006—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure for Dewar vessels or cryostats
- F17C13/007—Details of vessels or of the filling or discharging of vessels for medium-size and small storage vessels not under pressure for Dewar vessels or cryostats used for superconducting phenomena
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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
- G01R33/3804—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
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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
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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
- G01R33/381—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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
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Abstract
【解決手段】真空容器アセンブリ(70)は、うず電流を実質的に発生させない材料から形成された内側シリンダ(74)及び外側シリンダ(72)を含む。内側シリンダ(74)は、それに接して環状のフランジ(76)を有する第1の半分(78)と第2の半分(80)を含む。複数の金属界面(82、84、86)が内側シリンダ(74)及び外側シリンダ(72)に接続されている。複数の金属界面(82、84、86)は内側シリンダ(74)の第1の半分(78)と第2の半分(80)を結合させており、かつまた内側シリンダ(74)を外側シリンダ(72)に結合させている。
【選択図】図3
Description
12 オペレータコンソール
13 キーボードその他の入力デバイス
14 制御パネル
16 表示画面
18 リンク
20 コンピュータシステム
20a バックプレーン
22 画像プロセッサモジュール
24 CPUモジュール
26 メモリモジュール
28 ディスク記憶装置
30 着脱可能記憶装置
32 システム制御部
32a バックプレーン
34 高速シリアルリンク
36 CPUモジュール
38 パルス発生器モジュール
40 シリアルリンク
42 傾斜増幅器
44 生理学的収集制御器
46 スキャン室インタフェース回路
48 患者位置決めシステム
50 傾斜コイルアセンブリ
52 マグネットアセンブリ
54 超伝導マグネット
56 全身用RFコイル
58 送受信器モジュール
60 RF増幅器
62 送信/受信スイッチ
64 前置増幅器
66 メモリモジュール
68 アレイプロセッサ
70 真空容器アセンブリ
72 外側シリンダ
74 内側シリンダ
76 環状フランジ
78 第1の半分
80 第2の半分
82 内径金属リング
84 金属エンベロープ
86 外径金属リング
88 環形スペーサ
90 炭素繊維層
92 非フランジ側端部
94 マグネット中間面
96 溶接接続
98 ボア
100 真空ボリューム
102 電磁波
106 溝
108 溶接接続
Claims (10)
- 磁場を発生させるための少なくとも1つのマグネット(54)と、
前記少なくとも1つのマグネット(54)が発生させた磁場を傾斜磁場によって操作するための少なくとも1つの傾斜コイル(50)と、
前記少なくとも1つのマグネット(54)を覆っている真空容器(70)であって、
前記少なくとも1つの傾斜コイル(50)の動作中のその内部のうず電流を実質的に低減させる非金属材料から形成された内側シリンダ(74)であって、環状フランジ(76)をそれに接して有する第1の半分(78)及び第2の半分(80)を含む内側シリンダ(74)と、
前記少なくとも1つの傾斜コイル(50)の動作中のその内部のうず電流を実質的に低減させる非金属材料から形成された外側シリンダ(72)と、
をさらに備えた真空容器(70)と、
を備える磁気共鳴撮像(MRI)システム(10)。 - 前記内側シリンダ(74)及び外側シリンダ(72)に接続された複数の金属界面(82、84、86)であって、内側シリンダ(74)の第1の半分(78)と第2の半分(80)を結合させかつ内側シリンダ(74)と外側シリンダ(72)を結合させている複数の金属界面(82、84、86)をさらに備える請求項1に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記複数の金属界面(82、84、86)は前記外側シリンダ(72)の周りに巻き付けられた金属エンベロープ(84)を含む、請求項2に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記複数の金属界面(82、84、86)は前記環状フランジ(76)に付着させた外径金属リング(86)を含む、請求項2に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記複数の金属界面(82、84、86)は、前記内側シリンダ(74)の第1の半分(78)及び第2の半分(80)の非フランジ側端部(92)に付着させた内径金属リング(82)を含む、請求項2に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記複数の金属界面(82、84、86)は傾斜磁場との磁束鎖交を最小化するように位置決めされている、請求項2に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記複数の金属界面(82、84、86)は前記内側シリンダ(74)及び外側シリンダ(72)に接着されている、請求項2に記載の磁気共鳴撮像(MRI)システム(10)。
- 前記内側シリンダ(74)の第1の半分(78)及び第2の半分(80)はさらに、
前記少なくとも1つの傾斜コイル(50)の動作中のうず電流が実質的に低減されるような材料から形成された環形スペーサ(88)と、
前記環形スペーサ(88)に取り付けるように構成された複数の炭素繊維層(90)と、
を備える、請求項1に記載の磁気共鳴撮像(MRI)システム(10)。 - 前記真空容器(70)はさらに前記内側シリンダ(74)及び外側シリンダ(72)に付着させた浸透抵抗性コーティングを備える、請求項1に記載の磁気共鳴撮像(MRI)システム(10)。
- その内部のうず電流を実質的に低減させる前記非金属材料は、炭素繊維、ガラス繊維複合材及びG10材料のうちの少なくとも1つを含む、請求項1に記載の磁気共鳴撮像(MRI)システム(10)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/565,498 US7518370B2 (en) | 2006-11-30 | 2006-11-30 | Low eddy current vacuum vessel and method of making same |
US11/565,498 | 2006-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008136868A true JP2008136868A (ja) | 2008-06-19 |
JP5426087B2 JP5426087B2 (ja) | 2014-02-26 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2007307219A Expired - Fee Related JP5426087B2 (ja) | 2006-11-30 | 2007-11-28 | 低うず電流真空容器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7518370B2 (ja) |
JP (1) | JP5426087B2 (ja) |
CN (1) | CN101191827B (ja) |
GB (1) | GB2444396B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010131383A (ja) * | 2008-11-06 | 2010-06-17 | Toshiba Corp | Mri装置、mri装置用寝台およびmri装置用寝台天板 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US7705701B2 (en) * | 2005-07-15 | 2010-04-27 | General Electric Company | Thin metal layer vacuum vessels with composite structural support |
US7498814B1 (en) * | 2007-10-31 | 2009-03-03 | General Electric Company | Magnet assembly for magnetic resonance imaging system |
GB2458950B (en) * | 2008-04-04 | 2010-09-29 | Siemens Magnet Technology Ltd | Chamber apparatus and method of manufacture thereof |
US8253416B2 (en) * | 2009-03-10 | 2012-08-28 | Time Medical Holdings Company Limited | Superconductor magnetic resonance imaging system and method (super-MRI) |
CN102403081B (zh) | 2010-09-17 | 2015-02-11 | 通用电气公司 | 磁体组件及其制造方法 |
US8598872B2 (en) | 2011-07-27 | 2013-12-03 | General Electric Company | End flange for a magnetic resonance imaging system and method of manufacturing |
WO2013046957A1 (ja) * | 2011-09-30 | 2013-04-04 | 株式会社 日立メディコ | 磁気共鳴イメージング装置 |
CN103576109A (zh) * | 2013-11-15 | 2014-02-12 | 厦门大学 | 一种核磁共振造影射频线圈冷却装置 |
JP7010842B2 (ja) | 2016-04-25 | 2022-02-10 | コーニンクレッカ フィリップス エヌ ヴェ | 磁気共鳴放射線シールド及びシールドされた主磁石 |
CN108663643B (zh) * | 2018-06-07 | 2021-01-12 | 上海联影医疗科技股份有限公司 | 低温保持器及包括其的磁共振成像扫描装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6255910A (ja) * | 1985-09-03 | 1987-03-11 | ジ−エイ・テクノロジ−ズ・インコ−ポレ−テツド | 低温槽懸吊装置 |
JPH0334404A (ja) * | 1989-06-30 | 1991-02-14 | Mitsubishi Electric Corp | 極低温冷凍装置 |
JP2000060823A (ja) * | 1998-08-14 | 2000-02-29 | General Electric Co <Ge> | 非導電性内壁を有するmri磁石アセンブリ |
JP2004202245A (ja) * | 2002-12-23 | 2004-07-22 | General Electric Co <Ge> | 伝導冷却式受動シールドmriマグネット |
JP2007136202A (ja) * | 2005-11-17 | 2007-06-07 | General Electric Co <Ge> | 冷却の必要性が低い磁気共鳴イメージングシステム |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6254982A (ja) | 1985-09-04 | 1987-03-10 | Sumitomo Electric Ind Ltd | クライオスタツト |
US5296810A (en) * | 1992-03-27 | 1994-03-22 | Picker International, Inc. | MRI self-shielded gradient coils |
US6965236B2 (en) | 2003-11-20 | 2005-11-15 | Ge Medical Systems Global Technology Co., Llc | MRI system utilizing supplemental static field-shaping coils |
US7053740B1 (en) | 2005-07-15 | 2006-05-30 | General Electric Company | Low field loss cold mass structure for superconducting magnets |
-
2006
- 2006-11-30 US US11/565,498 patent/US7518370B2/en active Active
-
2007
- 2007-11-28 JP JP2007307219A patent/JP5426087B2/ja not_active Expired - Fee Related
- 2007-11-28 GB GB0723311A patent/GB2444396B/en not_active Expired - Fee Related
- 2007-11-30 CN CN2007101960747A patent/CN101191827B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6255910A (ja) * | 1985-09-03 | 1987-03-11 | ジ−エイ・テクノロジ−ズ・インコ−ポレ−テツド | 低温槽懸吊装置 |
JPH0334404A (ja) * | 1989-06-30 | 1991-02-14 | Mitsubishi Electric Corp | 極低温冷凍装置 |
JP2000060823A (ja) * | 1998-08-14 | 2000-02-29 | General Electric Co <Ge> | 非導電性内壁を有するmri磁石アセンブリ |
JP2004202245A (ja) * | 2002-12-23 | 2004-07-22 | General Electric Co <Ge> | 伝導冷却式受動シールドmriマグネット |
JP2007136202A (ja) * | 2005-11-17 | 2007-06-07 | General Electric Co <Ge> | 冷却の必要性が低い磁気共鳴イメージングシステム |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010131383A (ja) * | 2008-11-06 | 2010-06-17 | Toshiba Corp | Mri装置、mri装置用寝台およびmri装置用寝台天板 |
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Publication number | Publication date |
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GB2444396A (en) | 2008-06-04 |
CN101191827A (zh) | 2008-06-04 |
US20080129297A1 (en) | 2008-06-05 |
GB0723311D0 (en) | 2008-01-09 |
GB2444396B (en) | 2010-04-07 |
CN101191827B (zh) | 2012-12-19 |
US7518370B2 (en) | 2009-04-14 |
JP5426087B2 (ja) | 2014-02-26 |
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