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US 5,332,972 AGranted
Gradient magnetic field generator for MRI system
AssigneeKabushiki Kaisha Toshiba
InventorEisuke Takenouchi
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Abstract
Disclosed is a gradient magnetic field generator for an MRI system including a bobbin, formed of a non-magnetic body, being shaped into an appoximate hollow cylinder, and gradient coils embedded in the bobbin for generating gradient magnetic fields with supplied currents. The bobbin is formed such that thickness of the axial central portion of the bobbin is thicker than that of the axial end portions for enhancing the rigidity on the axial central portion.
Claims21
A gradient magnetic field generator for a magnetic resonant imaging system, the generator comprising:
- a bobbin, formed of a non-magnetic material and formed into a substantially hollow cylindrical shape, having radially inner and outer peripheral surfaces, an axial central portion of the bobbin being larger in radial thickness than axial end portions of the bobbin;
- and
- gradient coils embedded between the inner and outer peripheral surfaces of the bobbin for generating gradient magnetic fields when electric currents are supplied to the gradient coils.
Dependencies are inferred from the claim text.