GB2235777B - Passive shim arrangement for nuclear magnetic resonance - Google Patents

Passive shim arrangement for nuclear magnetic resonance

Info

Publication number
GB2235777B
GB2235777B GB9014707A GB9014707A GB2235777B GB 2235777 B GB2235777 B GB 2235777B GB 9014707 A GB9014707 A GB 9014707A GB 9014707 A GB9014707 A GB 9014707A GB 2235777 B GB2235777 B GB 2235777B
Authority
GB
United Kingdom
Prior art keywords
magnetic resonance
nuclear magnetic
passive shim
shim arrangement
arrangement
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
Application number
GB9014707A
Other versions
GB9014707D0 (en
GB2235777A (en
Inventor
Kazuaki Takeuchi
Yasuyuki Tahara
Keiichi Ebihara
Naoji Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB9014707D0 publication Critical patent/GB9014707D0/en
Publication of GB2235777A publication Critical patent/GB2235777A/en
Application granted granted Critical
Publication of GB2235777B publication Critical patent/GB2235777B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB9014707A 1989-07-07 1990-07-03 Passive shim arrangement for nuclear magnetic resonance Expired - Fee Related GB2235777B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1174171A JPH0339676A (en) 1989-07-07 1989-07-07 Magnetic field correcting device

Publications (3)

Publication Number Publication Date
GB9014707D0 GB9014707D0 (en) 1990-08-22
GB2235777A GB2235777A (en) 1991-03-13
GB2235777B true GB2235777B (en) 1994-05-11

Family

ID=15973948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9014707A Expired - Fee Related GB2235777B (en) 1989-07-07 1990-07-03 Passive shim arrangement for nuclear magnetic resonance

Country Status (3)

Country Link
JP (1) JPH0339676A (en)
DE (1) DE4021345C2 (en)
GB (1) GB2235777B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0816695B2 (en) * 1990-11-09 1996-02-21 三菱電機株式会社 Magnetic field correction device
US5343183A (en) * 1990-11-09 1994-08-30 Mitsubishi Denki Kabushiki Kaisha Magnetic field correction device
JPH04328477A (en) * 1991-04-30 1992-11-17 Mitsubishi Electric Corp Electromagnet device
JPH04347137A (en) * 1991-05-27 1992-12-02 Mitsubishi Electric Corp Magnetic field corrector
US5550472A (en) * 1995-04-13 1996-08-27 Picker International, Inc. Combined radio frequency coil with integral magnetic field shim set
JP3618910B2 (en) * 1996-07-10 2005-02-09 三菱電機株式会社 Magnetic field correction method for electromagnet device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743853A (en) * 1984-07-02 1988-05-10 Siemens Aktiengesellschaft Nuclear spin tomograph
US4748413A (en) * 1985-11-12 1988-05-31 Siemens Aktiengesellschaft Structure for homogenizing the fundamental field in a nuclear magnetic resonance examination apparatus
EP0272411A1 (en) * 1986-12-03 1988-06-29 General Electric Company Passive shimming assembly and method of determining shim placement for mr magnet
WO1988008126A1 (en) * 1987-04-15 1988-10-20 Oxford Magnet Technology Limited Magnetic field generating apparatus
US4879538A (en) * 1987-08-14 1989-11-07 Siemens Aktiengesellschaft Magnet system for nuclear magnetic resonance tomography devices
GB2221308A (en) * 1988-07-20 1990-01-31 Elscint Ltd Passively improving field homogeneity in a magnetic resonance system
US5047720A (en) * 1986-12-30 1991-09-10 Centre National De La Recherche Scientifique Correction device using magnetic elements for correcting unhomogeneities of the magnetic field in a magnet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5770747A (en) * 1980-10-14 1982-05-01 Sanwa Unyu Kogyo Kk Top installing and removing method for trailer
GB8530295D0 (en) * 1985-12-09 1986-01-22 Picker Int Ltd Electromagnet arrangements
US4698611A (en) * 1986-12-03 1987-10-06 General Electric Company Passive shimming assembly for MR magnet
US4803433A (en) * 1987-12-21 1989-02-07 Montefiore Hospital Association Of Western Pennsylvania, Inc. Method and apparatus for shimming tubular supermagnets
JPH01165106A (en) * 1987-12-22 1989-06-29 Asahi Chem Ind Co Ltd Magnetic field generator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743853A (en) * 1984-07-02 1988-05-10 Siemens Aktiengesellschaft Nuclear spin tomograph
US4748413A (en) * 1985-11-12 1988-05-31 Siemens Aktiengesellschaft Structure for homogenizing the fundamental field in a nuclear magnetic resonance examination apparatus
EP0272411A1 (en) * 1986-12-03 1988-06-29 General Electric Company Passive shimming assembly and method of determining shim placement for mr magnet
US5047720A (en) * 1986-12-30 1991-09-10 Centre National De La Recherche Scientifique Correction device using magnetic elements for correcting unhomogeneities of the magnetic field in a magnet
WO1988008126A1 (en) * 1987-04-15 1988-10-20 Oxford Magnet Technology Limited Magnetic field generating apparatus
US4879538A (en) * 1987-08-14 1989-11-07 Siemens Aktiengesellschaft Magnet system for nuclear magnetic resonance tomography devices
GB2221308A (en) * 1988-07-20 1990-01-31 Elscint Ltd Passively improving field homogeneity in a magnetic resonance system

Also Published As

Publication number Publication date
DE4021345C2 (en) 1994-09-22
JPH0339676A (en) 1991-02-20
GB9014707D0 (en) 1990-08-22
GB2235777A (en) 1991-03-13
DE4021345A1 (en) 1991-01-10

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19950810

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010703