Magnets and magnetic resonance imaging systems
OwnerFeng Liu, Riyu Wei +1inventors
InventorsFeng Liu, Riyu Wei, Ewald Weber
Life of this patent
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Abstract
A magnet suitable for use in a Magnetic Resonance Imaging (MRI) system. The magnet includes a magnet body having a bore extending therethrough along an axis of the body and a primary coil structure having at least four primary coils positioned along the axis. A first end coil is adjacent a first end of the bore of the magnet and a second end coil is adjacent a second end of the magnet. The first end coil and the second end coil are spaced apart by no more than 1000 mm and an imaging region produced by the primary coils is of a disk-type.
Claims20
A magnet suitable for use in a Magnetic Resonance Imaging (MM) system, the magnet having a magnet body having a bore extending therethrough along an axis of the body, the magnet comprising:
- a primary coil structure having at least four primary coils positioned along the axis, including a first end coil adjacent a first end of the bore of the magnet and a second end coil adjacent a second end of the magnet,
- wherein a largest inner bore diameter of the primary coil structure is greater than 700 mm,
- wherein the first end coil and the second end coil are spaced apart by no more than 1000 mm,
- wherein an imaging region produced by the primary coils is of a disk-type,
- wherein the disk-type imaging region has an axial diameter and a radial diameter, and
- wherein the axial diameter is less than the radial diameter, wherein the radial diameter is greater than 200 mm, and
- wherein a ratio of the axial diameter to the radial diameter of the disk-type imaging region is equal to or less than 0.60.
A magnetic resonance imaging (MM) system having a magnet, the magnet having
- a bore extending along an axis of the magnet, the magnet comprising:
- a primary coil structure having at least four primary coils positioned along the axis, including a first end coil adjacent a first end of the bore of the magnet and a second end coil adjacent a second end of the magnet,
- wherein a largest inner bore diameter of the primary coil structure is greater than 700 mm,
- wherein the first end coil and the second end coil are spaced apart by no more than 1000 mm, and
- wherein an imaging region produced by the primary coils is of a disk-type,
- wherein the disk-type imaging region has an axial diameter and a radial diameter, and
- wherein the axial diameter is less than the radial diameter, wherein the radial diameter is greater than 200 mm, and
- wherein a ratio of the axial diameter to the radial diameter of the disk-type imaging region is equal to or less than 0.60.
Dependencies are inferred from the claim text.