ATE118116T1 - Magnetischer zusammenbau. - Google Patents

Magnetischer zusammenbau.

Info

Publication number
ATE118116T1
ATE118116T1 AT88909356T AT88909356T ATE118116T1 AT E118116 T1 ATE118116 T1 AT E118116T1 AT 88909356 T AT88909356 T AT 88909356T AT 88909356 T AT88909356 T AT 88909356T AT E118116 T1 ATE118116 T1 AT E118116T1
Authority
AT
Austria
Prior art keywords
coils
magnetic field
homogeneity
working region
outer shield
Prior art date
Application number
AT88909356T
Other languages
English (en)
Inventor
Ian Leitch Mcdougall
David Black
Original Assignee
Oxford Medical Ltd
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 Oxford Medical Ltd filed Critical Oxford Medical Ltd
Application granted granted Critical
Publication of ATE118116T1 publication Critical patent/ATE118116T1/de

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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field
    • 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)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
AT88909356T 1987-10-23 1988-10-20 Magnetischer zusammenbau. ATE118116T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878724824A GB8724824D0 (en) 1987-10-23 1987-10-23 Magnet assembly

Publications (1)

Publication Number Publication Date
ATE118116T1 true ATE118116T1 (de) 1995-02-15

Family

ID=10625768

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88909356T ATE118116T1 (de) 1987-10-23 1988-10-20 Magnetischer zusammenbau.

Country Status (6)

Country Link
EP (1) EP0407384B1 (de)
JP (1) JPH03505023A (de)
AT (1) ATE118116T1 (de)
DE (1) DE3852957T2 (de)
GB (1) GB8724824D0 (de)
WO (1) WO1989004049A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11318857A (ja) * 1998-03-05 1999-11-24 General Electric Co <Ge> 開放型磁石
DE102008020107B4 (de) * 2008-04-22 2011-08-25 Bruker BioSpin GmbH, 76287 Kompakte supraleitende Magnetanordnung mit aktiver Abschirmung, wobei die Abschirmspule zur Feldformung eingesetzt wird
WO2015075709A2 (en) 2013-11-20 2015-05-28 Aspect Imaging Ltd. A shutting assembly for closing an entrance of an mri device
US10386432B2 (en) 2013-12-18 2019-08-20 Aspect Imaging Ltd. Radiofrequency shielding conduit in a door or a doorframe of a magnetic resonance imaging room
GB2545436B (en) * 2015-12-15 2018-04-11 Siemens Healthcare Ltd A cylindrical superconducting magnet with a shield of ferromagnetic material
US11029378B2 (en) 2016-12-14 2021-06-08 Aspect Imaging Ltd. Extendable radiofrequency shield for magnetic resonance imaging device
US10401452B2 (en) 2017-04-28 2019-09-03 Aspect Imaging Ltd. System for reduction of a magnetic fringe field of a magnetic resonance imaging device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625161A (ja) * 1985-06-30 1987-01-12 Shimadzu Corp Ｍｒｉ用マグネツト
JPS62193230A (ja) * 1986-02-20 1987-08-25 Toshiba Corp 磁気共鳴イメ−ジング装置
US4680666A (en) * 1986-04-07 1987-07-14 General Electric Company MR magnet wiring harness circuit

Also Published As

Publication number Publication date
EP0407384B1 (de) 1995-02-01
WO1989004049A1 (en) 1989-05-05
JPH03505023A (ja) 1991-10-31
GB8724824D0 (en) 1987-11-25
DE3852957T2 (de) 1995-09-28
EP0407384A1 (de) 1991-01-16
DE3852957D1 (de) 1995-03-16

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties