JP3801564B2 - 横磁界を有する開放型超伝導mri磁石 - Google Patents
横磁界を有する開放型超伝導mri磁石 Download PDFInfo
- Publication number
- JP3801564B2 JP3801564B2 JP2002564611A JP2002564611A JP3801564B2 JP 3801564 B2 JP3801564 B2 JP 3801564B2 JP 2002564611 A JP2002564611 A JP 2002564611A JP 2002564611 A JP2002564611 A JP 2002564611A JP 3801564 B2 JP3801564 B2 JP 3801564B2
- Authority
- JP
- Japan
- Prior art keywords
- magnet assembly
- coil
- plane
- magnetic
- coils
- 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
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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
- G01R33/381—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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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
米国特許第4,339,718号は2つの余弦コイルを有するコイル組立体を教示する。
Claims (8)
- 各セットが導電材料の巻線より成る4セットの磁気コイルにより構成された磁石組立体であって、
磁気コイルの各セットは互いに垂直な中央平面及び反射平面により分離された4つの象限のうちの1つに配置され、
磁気コイルの各セットは中央平面及び反射平面の両平面に垂直な第3の平面に関して対称的に配置され、
各磁気コイルは中央平面に垂直な軸の周りに巻回されており、
巻線は、動作時、電流の流れが反射平面に関して対称的であるが中央平面に関して非対称的であるため、組立体の中心に反射平面に垂直な方向に正味の磁界を発生させるように構成されている磁石組立体。 - 磁気コイルはD字形コイルより成る請求項1の磁石組立体。
- 磁気コイルはバナナコイルより成る請求項1の磁石組立体。
- 磁気コイルはサブコイルより成る請求項1乃至3のうち任意の請求項の磁石組立体。
- サブコイルが入れ子及び/またはオーバーラップ構成である請求項4の磁石組立体。
- コイルは平板でない請求項1乃至5の任意の請求項の磁石組立体。
- 磁気共鳴画像装置に使用される請求項1乃至6の任意の請求項の磁石組立体。
- 一次磁石組立体、
クライオスタットユニット、及び
勾配磁石組立体とより成り、
一次磁石組立体は請求項1乃至7のうち任意の請求項の磁石組立体より成り、
一次磁石組立体は超伝導が可能な動作温度を与えるクライオスタットユニット内に配置され、
勾配磁石組立体は磁気共鳴画像形成を可能にする磁界を所定の平面にわたって発生させるよう作動可能である磁気共鳴画像形成装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0102654.1A GB0102654D0 (en) | 2001-02-02 | 2001-02-02 | Improvements in or relating to magnets |
PCT/EP2002/001238 WO2002065149A1 (en) | 2001-02-02 | 2002-02-01 | Superconducting open mri magnet with transverse magnetic field |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004527282A JP2004527282A (ja) | 2004-09-09 |
JP3801564B2 true JP3801564B2 (ja) | 2006-07-26 |
Family
ID=9908003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002564611A Expired - Fee Related JP3801564B2 (ja) | 2001-02-02 | 2002-02-01 | 横磁界を有する開放型超伝導mri磁石 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6950001B2 (ja) |
EP (1) | EP1360517A1 (ja) |
JP (1) | JP3801564B2 (ja) |
CN (1) | CN1266484C (ja) |
GB (2) | GB0102654D0 (ja) |
WO (1) | WO2002065149A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3624254B1 (ja) * | 2003-09-30 | 2005-03-02 | 株式会社日立製作所 | 超伝導磁石装置 |
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 |
GB2427479B (en) * | 2005-06-22 | 2007-11-14 | Siemens Magnet Technology Ltd | Particle Radiation Therapy Equipment and method for performing particle radiation therapy |
GB2427478B (en) * | 2005-06-22 | 2008-02-20 | Siemens Magnet Technology Ltd | Particle radiation therapy equipment and method for simultaneous application of magnetic resonance imaging and particle radiation |
EP1962100A1 (en) * | 2007-02-20 | 2008-08-27 | Esaote S.p.A. | Magnetic structure for MRI machines and MRI machine particularly for orthopedic or rheumatologic applications |
EP2283374A4 (en) * | 2008-05-08 | 2012-01-04 | Univ Queensland | ARRANGEMENT OF SPOOLS FOR AN MRI DEVICE |
US8710843B2 (en) | 2010-04-27 | 2014-04-29 | University Health Network | Magnetic resonance imaging apparatus for use with radiotherapy |
US10126389B2 (en) | 2013-04-05 | 2018-11-13 | Koninklijke Philips N.V. | Gradient coil assembly with outer coils comprising aluminum |
US10605884B2 (en) | 2014-04-15 | 2020-03-31 | Imperial College Of Science, Technology And Medicine | Transverse field MRI apparatus |
GB2525209A (en) * | 2014-04-15 | 2015-10-21 | Imp Innovations Ltd | MRI Apparatus and methods |
CN105911487B (zh) * | 2016-04-14 | 2018-12-14 | 中国科学院上海微系统与信息技术研究所 | 一种超导磁传感器探测线圈及探测器 |
CN105911488B (zh) * | 2016-04-14 | 2019-08-16 | 中国科学院上海微系统与信息技术研究所 | 一种超导磁传感器探测线圈及探测器 |
US11867780B2 (en) * | 2018-06-20 | 2024-01-09 | Victoria Link Limited | MRI magnet and apparatus |
NL2025139B1 (en) * | 2020-03-16 | 2021-10-19 | Univ Twente | Magnet apparatus and apparatus for magnetic density separation |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH347655A (de) | 1957-04-18 | 1960-07-15 | Trueb Taeuber & Co Ag | Vorrichtung zur Aufnahme von Kerninduktionsspektren nach der Resonanzmethode |
GB2050062B (en) * | 1979-05-25 | 1983-07-20 | Emi Ltd | Coils for electromagnets with uniform fields |
JPS60139923A (ja) | 1983-12-27 | 1985-07-24 | Nippon Denso Co Ltd | 電磁クラツチ |
JPS621207A (ja) * | 1985-06-26 | 1987-01-07 | Fuji Electric Co Ltd | 均一磁場コイル |
US4779070A (en) * | 1986-12-18 | 1988-10-18 | Westinghouse Electric Corp. | High energy toroidal inductor |
US5448214A (en) * | 1994-06-15 | 1995-09-05 | General Electric Company | Open MRI magnet with superconductive shielding |
JPH09190913A (ja) * | 1996-01-10 | 1997-07-22 | Hitachi Medical Corp | 超電導磁石装置及びそれを用いた磁気共鳴イメージング装置 |
EP1018036A4 (en) * | 1997-09-25 | 2002-04-10 | Odin Technologies Ltd | MAGNETIC APPARATUS FOR MAGNETIC RESONANCE IMAGING (MRI) |
JP3283242B2 (ja) | 1999-06-21 | 2002-05-20 | ジーイー横河メディカルシステム株式会社 | 勾配コイルの製造方法、勾配コイルおよびmri装置 |
US6613240B2 (en) | 1999-12-06 | 2003-09-02 | Epion Corporation | Method and apparatus for smoothing thin conductive films by gas cluster ion beam |
-
2001
- 2001-02-02 GB GBGB0102654.1A patent/GB0102654D0/en not_active Ceased
-
2002
- 2002-02-01 CN CNB028044908A patent/CN1266484C/zh not_active Expired - Fee Related
- 2002-02-01 US US10/470,922 patent/US6950001B2/en not_active Expired - Fee Related
- 2002-02-01 JP JP2002564611A patent/JP3801564B2/ja not_active Expired - Fee Related
- 2002-02-01 GB GB0315679A patent/GB2388198B/en not_active Expired - Fee Related
- 2002-02-01 WO PCT/EP2002/001238 patent/WO2002065149A1/en active Application Filing
- 2002-02-01 EP EP02719773A patent/EP1360517A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB0315679D0 (en) | 2003-08-13 |
CN1489700A (zh) | 2004-04-14 |
JP2004527282A (ja) | 2004-09-09 |
GB2388198B (en) | 2005-06-01 |
GB2388198A (en) | 2003-11-05 |
US6950001B2 (en) | 2005-09-27 |
US20040085170A1 (en) | 2004-05-06 |
CN1266484C (zh) | 2006-07-26 |
WO2002065149A1 (en) | 2002-08-22 |
GB0102654D0 (en) | 2001-03-21 |
EP1360517A1 (en) | 2003-11-12 |
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