CA2277734A1 - Magnetic field generator for mri, method for assembling the same, and method for assembling a magnet unit for the same - Google Patents
Magnetic field generator for mri, method for assembling the same, and method for assembling a magnet unit for the same Download PDFInfo
- Publication number
- CA2277734A1 CA2277734A1 CA002277734A CA2277734A CA2277734A1 CA 2277734 A1 CA2277734 A1 CA 2277734A1 CA 002277734 A CA002277734 A CA 002277734A CA 2277734 A CA2277734 A CA 2277734A CA 2277734 A1 CA2277734 A1 CA 2277734A1
- Authority
- CA
- Canada
- Prior art keywords
- yoke
- assembling
- same
- column
- magnet
- 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.)
- Granted
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
- G01R33/3806—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
- G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent 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
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
-
- 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
- Y10T29/49002—Electrical device making
-
- 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
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
-
- 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
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
-
- 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
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
-
- 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
- Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
- Y10T29/49901—Sequentially associating parts on stationary aligning means
-
- 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
- Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
- Y10T29/49902—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"] by manipulating aligning means
Abstract
A plate yoke has an upper surface formed with a projection and a guiding rail. A new magnet block is transported by sliding on the upper surface of the plate yoke, and is bonded side by side with the projection or a magnet block which is already fixed. During the above operation, a magnetic member is held above the plate yoke. Preferably, the new magnet block is transported toward a corner portion, with side surfaces of the magnet block held parallel to a side surface of the projection and a side surface of the guiding rail respectively. When the magnet unit and the column yoke is connected, the column yoke or the magnet unit is lowered so that a guiding rod attached to an end face of the column yoke is inserted into a hole formed in the magnetic unit. Further, the column yoke is guided by a guiding member disposed between a permanent magnet on the plate yoke and a position where the column yoke is to be connected on the plate yoke.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10-223444 | 1998-08-06 | ||
JP10223444A JP2953659B1 (en) | 1998-08-06 | 1998-08-06 | Magnetic field generator for MRI, method of assembling the same, and method of assembling magnet unit used therein |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2277734A1 true CA2277734A1 (en) | 2000-02-06 |
CA2277734C CA2277734C (en) | 2003-04-22 |
Family
ID=16798245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002277734A Expired - Fee Related CA2277734C (en) | 1998-08-06 | 1999-07-20 | Magnetic field generator for mri, method for assembling the same, and method for assembling a magnet unit for the same |
Country Status (8)
Country | Link |
---|---|
US (3) | US6336989B1 (en) |
EP (2) | EP0978727B1 (en) |
JP (1) | JP2953659B1 (en) |
KR (2) | KR100381813B1 (en) |
CN (2) | CN1212512C (en) |
CA (1) | CA2277734C (en) |
DE (2) | DE69942776D1 (en) |
IL (1) | IL131244A (en) |
Families Citing this family (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3934312B2 (en) * | 2000-07-11 | 2007-06-20 | 株式会社日立メディコ | Magnetic resonance imaging system |
JP3788573B2 (en) | 2000-11-16 | 2006-06-21 | 信越化学工業株式会社 | MRI magnetic circuit assembly method |
US7271689B1 (en) | 2000-11-22 | 2007-09-18 | Fonar Corporation | Magnet structure |
US7248137B1 (en) | 2000-11-22 | 2007-07-24 | Fonar Corporation | Magnet structure |
US7463129B1 (en) | 2000-11-22 | 2008-12-09 | Fonar Corporation | Magnet structure |
US6982620B1 (en) | 2000-11-22 | 2006-01-03 | Fonar Corporation | Magnet structure |
US6518867B2 (en) | 2001-04-03 | 2003-02-11 | General Electric Company | Permanent magnet assembly and method of making thereof |
US6662434B2 (en) * | 2001-04-03 | 2003-12-16 | General Electric Company | Method and apparatus for magnetizing a permanent magnet |
JP4617596B2 (en) * | 2001-04-24 | 2011-01-26 | 日立金属株式会社 | MRI magnetic field generator and MRI apparatus using the same |
US7091412B2 (en) * | 2002-03-04 | 2006-08-15 | Nanoset, Llc | Magnetically shielded assembly |
US20040210289A1 (en) * | 2002-03-04 | 2004-10-21 | Xingwu Wang | Novel nanomagnetic particles |
US7162302B2 (en) * | 2002-03-04 | 2007-01-09 | Nanoset Llc | Magnetically shielded assembly |
CN101089649B (en) * | 2002-02-15 | 2010-06-02 | 日立金属株式会社 | Magnetic field generating apparatus manufacturing method |
US6828891B2 (en) | 2002-07-25 | 2004-12-07 | Ge Medical Systems Global Technology Company, Llc | Method for assembling magnetic members for magnetic resonance imaging magnetic field generator |
US6664878B1 (en) | 2002-07-26 | 2003-12-16 | Ge Medical Systems Global Technology Company, Llc | Method for assembling magnetic members for magnetic resonance imaging magnetic field generator |
US6825666B2 (en) | 2002-12-23 | 2004-11-30 | General Electric Company | Pole face for permanent magnet MRI with laminated structure |
US6844801B2 (en) * | 2003-03-21 | 2005-01-18 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for adjusting center magnetic field of a magnetic field generator for MRI |
US7001479B2 (en) * | 2003-04-03 | 2006-02-21 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for assembling magnetized permanent magnetic blocks |
US6859123B2 (en) * | 2003-04-03 | 2005-02-22 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for positioning permanent magnetic blocks |
EP1611450B1 (en) * | 2003-04-04 | 2008-05-21 | GE Medical Systems Global Technology Company, LLC | Magnetic field generator for mri and method of covering magnetic field generator for mri |
US20070010702A1 (en) * | 2003-04-08 | 2007-01-11 | Xingwu Wang | Medical device with low magnetic susceptibility |
US20050079132A1 (en) * | 2003-04-08 | 2005-04-14 | Xingwu Wang | Medical device with low magnetic susceptibility |
US20050025797A1 (en) * | 2003-04-08 | 2005-02-03 | Xingwu Wang | Medical device with low magnetic susceptibility |
US20050155779A1 (en) * | 2003-04-08 | 2005-07-21 | Xingwu Wang | Coated substrate assembly |
US20060102871A1 (en) * | 2003-04-08 | 2006-05-18 | Xingwu Wang | Novel composition |
US20050119725A1 (en) * | 2003-04-08 | 2005-06-02 | Xingwu Wang | Energetically controlled delivery of biologically active material from an implanted medical device |
US20040254419A1 (en) * | 2003-04-08 | 2004-12-16 | Xingwu Wang | Therapeutic assembly |
US20050149002A1 (en) * | 2003-04-08 | 2005-07-07 | Xingwu Wang | Markers for visualizing interventional medical devices |
US6809619B1 (en) * | 2003-10-16 | 2004-10-26 | G.E. Medical Systems Global Technology Co., Llc | System and method for adjusting magnetic center field for permanent MRI magnetic field generator |
US7373716B2 (en) * | 2003-10-22 | 2008-05-20 | Dexter Magnetic Technologies, Inc. | Method for constructing permanent magnet assemblies |
US20070149496A1 (en) * | 2003-10-31 | 2007-06-28 | Jack Tuszynski | Water-soluble compound |
JP4139767B2 (en) | 2003-12-12 | 2008-08-27 | 信越化学工業株式会社 | Permanent magnet facing magnetic circuit |
US20050249667A1 (en) * | 2004-03-24 | 2005-11-10 | Tuszynski Jack A | Process for treating a biological organism |
US20060118758A1 (en) * | 2004-09-15 | 2006-06-08 | Xingwu Wang | Material to enable magnetic resonance imaging of implantable medical devices |
EP1808126B1 (en) * | 2004-09-30 | 2012-12-26 | Hitachi Metals, Ltd. | Magnetic field generator for mri |
US20070285197A1 (en) * | 2006-06-08 | 2007-12-13 | General Electric Company | Method for disassembling a magnetic field generator |
CN100581455C (en) * | 2006-10-13 | 2010-01-20 | Ge医疗系统环球技术有限公司 | Magnetic field generating device and magnetic resonance imaging apparatus |
US8576036B2 (en) | 2010-12-10 | 2013-11-05 | Correlated Magnetics Research, Llc | System and method for affecting flux of multi-pole magnetic structures |
US8115581B2 (en) | 2008-04-04 | 2012-02-14 | Correlated Magnetics Research, Llc | Techniques for producing an electrical pulse |
US9371923B2 (en) | 2008-04-04 | 2016-06-21 | Correlated Magnetics Research, Llc | Magnetic valve assembly |
US8760250B2 (en) * | 2009-06-02 | 2014-06-24 | Correlated Magnetics Rsearch, LLC. | System and method for energy generation |
US8179219B2 (en) | 2008-04-04 | 2012-05-15 | Correlated Magnetics Research, Llc | Field emission system and method |
US8174347B2 (en) | 2010-07-12 | 2012-05-08 | Correlated Magnetics Research, Llc | Multilevel correlated magnetic system and method for using the same |
US8368495B2 (en) | 2008-04-04 | 2013-02-05 | Correlated Magnetics Research LLC | System and method for defining magnetic structures |
US7843295B2 (en) | 2008-04-04 | 2010-11-30 | Cedar Ridge Research Llc | Magnetically attachable and detachable panel system |
US9202616B2 (en) | 2009-06-02 | 2015-12-01 | Correlated Magnetics Research, Llc | Intelligent magnetic system |
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US9105380B2 (en) | 2008-04-04 | 2015-08-11 | Correlated Magnetics Research, Llc. | Magnetic attachment system |
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EP2333935B1 (en) * | 2008-10-02 | 2016-01-06 | Nissan Motor Co., Ltd. | Field pole magnet, field pole magnet manufacturing method, and permanent magnet rotary machine |
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US4672346A (en) * | 1984-04-11 | 1987-06-09 | Sumotomo Special Metal Co., Ltd. | Magnetic field generating device for NMR-CT |
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JPH0394733A (en) * | 1989-09-08 | 1991-04-19 | Sumitomo Special Metals Co Ltd | Magnetic field generator for mri |
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-
1998
- 1998-08-06 JP JP10223444A patent/JP2953659B1/en not_active Expired - Fee Related
-
1999
- 1999-07-20 CA CA002277734A patent/CA2277734C/en not_active Expired - Fee Related
- 1999-07-22 DE DE69942776T patent/DE69942776D1/en not_active Expired - Lifetime
- 1999-07-22 EP EP99114441A patent/EP0978727B1/en not_active Expired - Lifetime
- 1999-07-22 EP EP05008190A patent/EP1557684B1/en not_active Expired - Lifetime
- 1999-07-22 DE DE69929006T patent/DE69929006T2/en not_active Expired - Lifetime
- 1999-08-04 IL IL13124499A patent/IL131244A/en not_active IP Right Cessation
- 1999-08-04 US US09/366,563 patent/US6336989B1/en not_active Expired - Lifetime
- 1999-08-05 CN CNB991107756A patent/CN1212512C/en not_active Expired - Lifetime
- 1999-08-05 CN CN2005100785262A patent/CN1707253B/en not_active Expired - Lifetime
- 1999-08-06 KR KR10-1999-0032211A patent/KR100381813B1/en not_active IP Right Cessation
-
2001
- 2001-03-23 US US09/815,008 patent/US6650214B2/en not_active Expired - Lifetime
-
2002
- 2002-09-26 US US10/254,634 patent/US7065860B2/en not_active Expired - Fee Related
- 2002-10-02 KR KR10-2002-0060072A patent/KR100404041B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0978727A3 (en) | 2001-05-02 |
US6650214B2 (en) | 2003-11-18 |
KR100381813B1 (en) | 2003-04-26 |
KR20000017117A (en) | 2000-03-25 |
EP0978727A2 (en) | 2000-02-09 |
CN1212512C (en) | 2005-07-27 |
KR100404041B1 (en) | 2003-11-05 |
CN1707253B (en) | 2011-06-22 |
DE69929006D1 (en) | 2006-01-26 |
EP1557684A2 (en) | 2005-07-27 |
CA2277734C (en) | 2003-04-22 |
CN1707253A (en) | 2005-12-14 |
EP1557684B1 (en) | 2010-09-15 |
EP1557684A3 (en) | 2005-08-10 |
EP0978727B1 (en) | 2005-12-21 |
IL131244A0 (en) | 2001-01-28 |
US6336989B1 (en) | 2002-01-08 |
KR20030003137A (en) | 2003-01-09 |
US7065860B2 (en) | 2006-06-27 |
JP2953659B1 (en) | 1999-09-27 |
CN1254838A (en) | 2000-05-31 |
IL131244A (en) | 2004-05-12 |
DE69942776D1 (en) | 2010-10-28 |
DE69929006T2 (en) | 2006-09-14 |
JP2000051175A (en) | 2000-02-22 |
US20030016108A1 (en) | 2003-01-23 |
US20010011576A1 (en) | 2001-08-09 |
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