FI923080A - Laitteisto ja menetelmä magneettikuvaukseen - Google Patents

Laitteisto ja menetelmä magneettikuvaukseen Download PDF

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Publication number
FI923080A
FI923080A FI923080A FI923080A FI923080A FI 923080 A FI923080 A FI 923080A FI 923080 A FI923080 A FI 923080A FI 923080 A FI923080 A FI 923080A FI 923080 A FI923080 A FI 923080A
Authority
FI
Finland
Prior art keywords
field
pole shoes
magnetic resonance
resonance imaging
strength
Prior art date
Application number
FI923080A
Other languages
English (en)
Swedish (sv)
Other versions
FI93060C (fi
FI923080A0 (fi
FI93060B (fi
Inventor
Goesta Ehnholm
Original Assignee
Picker Nordstar 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 Picker Nordstar Oy filed Critical Picker Nordstar Oy
Priority to FI923080A priority Critical patent/FI93060C/fi
Publication of FI923080A0 publication Critical patent/FI923080A0/fi
Publication of FI923080A publication Critical patent/FI923080A/fi
Application granted granted Critical
Publication of FI93060B publication Critical patent/FI93060B/fi
Priority to US08/362,735 priority patent/US5537040A/en
Publication of FI93060C publication Critical patent/FI93060C/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
    • G01R33/38—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
    • 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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/445—MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field imaging

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FI923080A 1992-07-03 1992-07-03 Laitteisto ja menetelmä magneettikuvaukseen FI93060C (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI923080A FI93060C (fi) 1992-07-03 1992-07-03 Laitteisto ja menetelmä magneettikuvaukseen
US08/362,735 US5537040A (en) 1992-07-03 1994-12-22 Apparatus and method for magnetic resonance imaging using pre-polarizing field

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI923080 1992-07-03
FI923080A FI93060C (fi) 1992-07-03 1992-07-03 Laitteisto ja menetelmä magneettikuvaukseen

Publications (4)

Publication Number Publication Date
FI923080A0 FI923080A0 (fi) 1992-07-03
FI923080A true FI923080A (fi) 1994-01-04
FI93060B FI93060B (fi) 1994-10-31
FI93060C FI93060C (fi) 1995-02-10

Family

ID=8535568

Family Applications (1)

Application Number Title Priority Date Filing Date
FI923080A FI93060C (fi) 1992-07-03 1992-07-03 Laitteisto ja menetelmä magneettikuvaukseen

Country Status (2)

Country Link
US (1) US5537040A (fi)
FI (1) FI93060C (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355798B (en) * 1999-10-26 2004-05-19 Oxford Magnet Tech Improved magnetic coil former
EP2629440B1 (en) * 2012-02-15 2016-02-10 Harman International Industries Ltd. Audio mixing console

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616078A1 (de) * 1986-05-13 1987-11-19 Bruker Analytische Messtechnik Elektromagnetsystem fuer die kernspintomographie
US4766378A (en) * 1986-11-28 1988-08-23 Fonar Corporation Nuclear magnetic resonance scanners
US4998976A (en) * 1987-10-07 1991-03-12 Uri Rapoport Permanent magnet arrangement
US5063934A (en) * 1987-10-07 1991-11-12 Advanced Techtronics, Inc. Permanent magnet arrangement
CA2108157C (en) * 1991-04-12 2000-07-18 Foxboro Nmr Ltd. Permanent magnet assembly

Also Published As

Publication number Publication date
FI93060C (fi) 1995-02-10
FI923080A0 (fi) 1992-07-03
FI93060B (fi) 1994-10-31
US5537040A (en) 1996-07-16

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: PICKER NORDSTAR OY

BB Publication of examined application