US 5,345,177 AGranted

Magnetic resonance imaging apparatus having vibration damping means on gradient coil

AssigneeHitachi, Ltd.

InventorsTaichi Sato, Yoshiharu Mohri, Kihachiro Tanaka, Takao Honmei, Masayuki Otsuka, Masashi Wada

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Abstract

A magnetic resonance imaging apparatus includes a magnet for generating a static magnetic field, a gradient coil for generating a gradient magnetic field in a measurement space, and a vibration damping means which includes a container and granular material disposed in the container. The vibration damping means is installed with a supporting bolt between the gradient coil and a supporting means. Since the gradient coil is supported at a constant position without any vibration and deformation, the magnetic resonance imaging apparatus generates an accurate image signal without any acoustic noise.

Claims10

Dependent claims

A magnetic resonance imaging apparatus comprising:

a magnet for generating a static magnetic field in a measurement space in which a body to be examined is to be placed;
a gradient coil assembly for generating a gradient magnetic field in the measurement space;
support means for supporting the gradient coil assembly;
and
vibration damping means disposed between the gradient coil assembly and the support means for damping vibrations from the gradient coil assembly, the vibration damping means including
a container having a first flexible part,
granular material disposed in the container, and
a first supporting member provided on the first flexible part and connected to one of the gradient coil assembly and the support means.

5 more elements

Dependencies are inferred from the claim text.