Title:
GRADIENT MAGNETIC-FIELD COIL DEVICE FOR MAGNETIC RESONANCE IMAGING SYSTEM
Document Type and Number:
Japanese Patent JPS63160315
Kind Code:
A
Abstract:
PURPOSE: To reduce the vibration of a spool and the noise sharply by fixing a ring-shaped rib made of a non-magnetic metal to the central part of the spool in the axial direction.
CONSTITUTION: A ring-shaped rib made of a non-magnetic metal material such as stainless steel is fixed to the central part of a spool 8 in the Z-axis direction. Because Young's modulus of the metal material is high as compared with that of a non-metal material such as a resin-laminated material, it is possible to enhance the rigidity of the spool 8 against the deformation in the diametric direction. Accordingly, it is possible to reduce the vibration of the spool due to the electromagnetic force of a gradient magneticfield coil.
Inventors:
TAKECHI MORIAKI
Application Number:
JP30648486A
Publication Date:
July 04, 1988
Filing Date:
December 24, 1986
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G01R33/20; A61B5/055; A61B10/00; H01F7/20; (IPC1-7): A61B10/00; G01R33/22; H01F7/20
Attorney, Agent or Firm:
Soga Doteru