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US 11,768,263 B2Granted
Magnet system for a magnetic resonance imaging system
AssigneeSiemens Healthcare GmbH
InventorsRainer Kirsch, Stefan Popescu
Life of this patent
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Abstract
The disclosure describes a magnet system for a magnetic resonance imaging system comprising a basic field magnet and a gradient system, wherein coils of the gradient system are positioned outside the area of a predefined basic magnetic field (B0) of the basic field magnet. The disclosure further describes a gradient system and a magnetic resonance imaging system with such a magnet system.
Claims11
A magnet system for a magnetic resonance imaging system, comprising:
- a basic field magnet configured to generate a predefined basic magnetic field and having a shape configured to fit a predetermined anatomy of a patient to be examined via the magnetic resonance imaging system, the shape comprising a partial torus having a major radius and an open segment in accordance with an incomplete revolution of the major radius about an axis of revolution to provide the predefined basic magnetic field of the basic field magnet in a direction that is orthogonal to the axis of revolution of the partial torus;
- and
- a gradient system,
- wherein coils of the gradient system are positioned outside an area of the predefined basic magnetic field of the basic field magnet.
1 more element
A gradient system for a magnet system associated with a magnetic resonance imaging system, comprising:
- a basic field magnet configured to generate a predefined basic magnetic field and having a shape configured to fit a predetermined anatomy of a patient to be examined via the magnetic resonance imaging system, the shape comprising a partial torus having a major radius and an open segment in accordance with an incomplete revolution of the major radius about an axis of revolution to provide the predefined basic magnetic field of the basic field magnet in a direction that is orthogonal to the axis of revolution of the partial torus;
- a first pair of coils;
- a second pair of coils;
- and
- a third pair of coils,
- wherein each of the first, second, and third pair of coils is (i) configured to be independently controlled to switch their respective gradients in one of an x-direction, a y-direction, or a z-direction, and (ii) arranged outside an area of the predefined basic magnetic field associated with the basic field magnet, and
- wherein the x-direction, the y-direction, and the z-direction are each perpendicular to one another.
4 more elements
A magnetic resonance imaging system, comprising:
- a magnetic resonance scanner;
- and
- a magnet system including:
- a basic field magnet configured to generate a predefined basic magnetic field and having a shape configured to fit a predetermined anatomy of a patient to be examined via the magnetic resonance imaging system, the shape comprising a partial torus having a major radius and an open segment in accordance with an incomplete revolution of the major radius about an axis of revolution to provide the predefined basic magnetic field of the basic field magnet in a direction that is orthogonal to the axis of revolution of the partial torus;
- and
- a gradient system,
- wherein coils of the gradient system are positioned outside an area of the predefined basic magnetic field of the basic field magnet.
4 more elements
Dependencies are inferred from the claim text.