WO1990005986A3 - Magnetic field generating assembly - Google Patents

Magnetic field generating assembly Download PDF

Info

Publication number
WO1990005986A3
WO1990005986A3 PCT/GB1989/001396 GB8901396W WO9005986A3 WO 1990005986 A3 WO1990005986 A3 WO 1990005986A3 GB 8901396 W GB8901396 W GB 8901396W WO 9005986 A3 WO9005986 A3 WO 9005986A3
Authority
WO
WIPO (PCT)
Prior art keywords
coils
magnetic field
field generating
generating assembly
pairs
Prior art date
Application number
PCT/GB1989/001396
Other languages
French (fr)
Other versions
WO1990005986A2 (en
Inventor
Ian Leitch Mcdougall
Original Assignee
Oxford Advanced Tech
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 Advanced Tech filed Critical Oxford Advanced Tech
Publication of WO1990005986A2 publication Critical patent/WO1990005986A2/en
Publication of WO1990005986A3 publication Critical patent/WO1990005986A3/en

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

A magnetic field generating assembly comprises two pairs of first coils (1, 2; 3, 4) lying on arms (5, 6) of a first V. Two pairs of second electrical coils (7, 8; 9, 10) are provided about respective second axes (11, 12) defining arms of a second V, the arms of the second V being non-coincident with those of the first V. The respective sets of first and second coils lie on opposite sides of a plane (15). The inner coils of each pair (1-4) generate magnetic fields in the opposite sense to the outer coils of the respective pairs (7-10).
PCT/GB1989/001396 1988-11-22 1989-11-22 Magnetic field generating assembly WO1990005986A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8827271.1 1988-11-22
GB888827271A GB8827271D0 (en) 1988-11-22 1988-11-22 Magnetic field generating assembly

Publications (2)

Publication Number Publication Date
WO1990005986A2 WO1990005986A2 (en) 1990-05-31
WO1990005986A3 true WO1990005986A3 (en) 1990-07-26

Family

ID=10647260

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/001396 WO1990005986A2 (en) 1988-11-22 1989-11-22 Magnetic field generating assembly

Country Status (2)

Country Link
GB (1) GB8827271D0 (en)
WO (1) WO1990005986A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4045769B2 (en) 2001-10-10 2008-02-13 株式会社日立製作所 Magnetic field generator and MRI apparatus using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856579A (en) * 1954-07-01 1958-10-14 Varian Associates Gyromagnetic resonance magnetometer
US3582779A (en) * 1966-01-20 1971-06-01 Varian Associates Apparatus for improving the homogeneity of magnetic fields
GB1309089A (en) * 1969-11-28 1973-03-07 British Oxygen Co Ltd Electromagnets
JPS62152109A (en) * 1985-12-26 1987-07-07 Toshiba Corp Receiving coil of device for magnetic resonance diagnosis
US4721914A (en) * 1984-05-01 1988-01-26 The United States Of America As Represented By The United States Department Of Energy Apparatus for unilateral generation of a homogeneous magnetic field

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856579A (en) * 1954-07-01 1958-10-14 Varian Associates Gyromagnetic resonance magnetometer
US3582779A (en) * 1966-01-20 1971-06-01 Varian Associates Apparatus for improving the homogeneity of magnetic fields
GB1309089A (en) * 1969-11-28 1973-03-07 British Oxygen Co Ltd Electromagnets
US4721914A (en) * 1984-05-01 1988-01-26 The United States Of America As Represented By The United States Department Of Energy Apparatus for unilateral generation of a homogeneous magnetic field
JPS62152109A (en) * 1985-12-26 1987-07-07 Toshiba Corp Receiving coil of device for magnetic resonance diagnosis

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 387 (E-566)(2834) 17 December 1987, & JP-A-62 152109 (TOSHIBA CORP.) see the whole document *
REVIEW OF SCIENTIFIC INSTRUMENTS. vol. 56, no. 3, March 1985, NEW YORK US pages 402 - 410; ALAN R.RATH: "Opposed coil magnet calculations for large sample and unilateral N.M.R." *
REVUE GENERALE DE L'ELECTRICITE. vol. 78, no. 9, September 1969, PARIS FR pages 828 - 834; G.BRONCA et J.HAMELIN: "Conception,utilisation et évolution des aimants en physique nucléaire" see figure 4 *

Also Published As

Publication number Publication date
GB8827271D0 (en) 1988-12-29
WO1990005986A2 (en) 1990-05-31

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