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US 5,630,415 AGranted
Rigidized gradient coil
AssigneeThe Regents of the University of California
InventorLeon Kaufman
Life of this patent
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Abstract
A gradient coil assembly for a magnetic resonance imaging device is disclosed. The gradient coil assembly includes a web of interconnected fibs fixed to the gradient coil former to rigidize the gradient coil former. The rigidized gradient coil former is less susceptible to vibration, thus minimizing the acoustical noise generated by the gradient coil assembly during the MRI operation.
Claims45
An MRI gradient coil assembly, comprising:
- at least one gradient coil to induce a gradient magnetic field in an imaging area;
- a gradient coil former fixed to the gradient coil;
- a grid fixed to the gradient coil former, the grid having a plurality of interconnected ribs forming a web wherein the grid opposes elastic deformation of the gradient coil former induced by operation of the gradient coil;
- and
- a skin fixed to the grid opposite the gradient coil former.
2 more elements
An MRI gradient coil assembly, comprising:
- at least one gradient coil to induce a gradient magnetic field in an imaging area;
- a cylindrical gradient coil former fixed to the gradient coil;
- and
- a cylindrical grid fixed to an exterior surface of the gradient coil former, the grid having a plurality of interconnected ribs forming a web wherein the grid opposes elastic deformation of the gradient coil former induced by operation of the gradient coil.
1 more element
An MRI gradient coil assembly, comprising:
- at least one gradient coil to induce a gradient magnetic field in an imaging area;
- a planar gradient coil former fixed to the gradient coil;
- and
- a planar grid fixed to the gradient coil former, the grid having a plurality of interconnected ribs forming a web wherein the grid opposes elastic deformation of the gradient coil former induced by operation of the gradient coil.
1 more element
An MRI gradient coil assembly, comprising:
- at least one gradient coil to induce a gradient magnetic field in an imaging area;
- a gradient coil former fixed to the gradient coil;
- and
- a grid fixed to the gradient coil former, the grid having a plurality of interconnected ribs forming a web of equilateral triangles wherein the grid opposes elastic deformation of the gradient coil former induced by operation of the gradient coil.
1 more element
An MRI gradient coil assembly, comprising:
- p1 three gradient coils to induce a gradient magnetic field in an imaging area;
- a gradient coil former, the gradient coils embedded within the gradient coil former;
- and
- a grid integral with the gradient coil former, the grid having a plurality of interconnected ribs forming a web wherein the grid opposes elastic deformation of the gradient coil former induced by operation of one or more of the gradient coils.
1 more element
Dependencies are inferred from the claim text.