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FI831816L - Spolarrangemang vid nmr-forsknings- apparatur. - Google Patents

Spolarrangemang vid nmr-forsknings- apparatur.

Info

Publication number
FI831816L
FI831816L FI831816A FI831816A FI831816L FI 831816 L FI831816 L FI 831816L FI 831816 A FI831816 A FI 831816A FI 831816 A FI831816 A FI 831816A FI 831816 L FI831816 L FI 831816L
Authority
FI
Finland
Prior art keywords
spolarrangemang
forsknings
apparatur
vid
nmr
Prior art date
Application number
FI831816A
Other languages
English (en)
Other versions
FI831816A0 (fi
FI70751C (fi
FI70751B (fi
Inventor
Matti Savelainen
Original Assignee
Instrumentarium Oy
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 Instrumentarium Oy filed Critical Instrumentarium Oy
Priority to FI831816A priority Critical patent/FI70751C/fi
Publication of FI831816A0 publication Critical patent/FI831816A0/fi
Priority to US06/611,110 priority patent/US4654596A/en
Publication of FI831816L publication Critical patent/FI831816L/fi
Application granted granted Critical
Publication of FI70751B publication Critical patent/FI70751B/fi
Publication of FI70751C publication Critical patent/FI70751C/fi

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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised 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
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
    • 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
    • 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
    • G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FI831816A 1983-05-20 1983-05-20 Spolanordning foer nmr-undersoekningsutrustning FI70751C (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI831816A FI70751C (fi) 1983-05-20 1983-05-20 Spolanordning foer nmr-undersoekningsutrustning
US06/611,110 US4654596A (en) 1983-05-20 1984-05-17 Coil arrangement for NMR examination apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI831816 1983-05-20
FI831816A FI70751C (fi) 1983-05-20 1983-05-20 Spolanordning foer nmr-undersoekningsutrustning

Publications (4)

Publication Number Publication Date
FI831816A0 FI831816A0 (fi) 1983-05-20
FI831816L true FI831816L (fi) 1984-11-21
FI70751B FI70751B (fi) 1986-06-26
FI70751C FI70751C (fi) 1986-10-06

Family

ID=8517250

Family Applications (1)

Application Number Title Priority Date Filing Date
FI831816A FI70751C (fi) 1983-05-20 1983-05-20 Spolanordning foer nmr-undersoekningsutrustning

Country Status (2)

Country Link
US (1) US4654596A (fi)
FI (1) FI70751C (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180808A (ja) * 1984-09-27 1986-04-24 Yokogawa Hokushin Electric Corp 静磁場発生用コイル
US5045826A (en) * 1990-04-05 1991-09-03 General Electric Company Actively shielded magnetic resonance magnet without cryogens
US5448214A (en) * 1994-06-15 1995-09-05 General Electric Company Open MRI magnet with superconductive shielding
DE19722193C2 (de) * 1996-07-05 2000-06-08 Siemens Ag Magnetresonanz-Scanner
CN101019036A (zh) * 2004-06-17 2007-08-15 皇家飞利浦电子股份有限公司 带有铁辅助磁场梯度系统的磁共振成像系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4456881A (en) * 1982-01-18 1984-06-26 Technicare Corporation Gradient-coil apparatus for a magnetic resonance system
US4500860A (en) * 1984-07-05 1985-02-19 General Electric Company Winding support and method for NMR magnet axisymmetric correction coils

Also Published As

Publication number Publication date
FI831816A0 (fi) 1983-05-20
FI70751C (fi) 1986-10-06
FI70751B (fi) 1986-06-26
US4654596A (en) 1987-03-31

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: INSTRUMENTARIUM OY