Basic field magnet for an MRI apparatus with a displaceable homogeneity volume
First Claim
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1. A magnet assembly for a magnetic resonance imaging apparatus, said magnet assembly comprising:
- a magnet having a patient receptacle therein, said magnet producing a basic magnetic field having a homogeneity volume at a defined volume location; and
auxiliary means disposed relative to said magnet for selectively, temporarily spatially displacing substantially an entirety of said homogeneity volume from said defined volume location to a different volume location.
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Abstract
A magnet assembly for a magnetic resonance imaging apparatus, has a magnet with a patient receptacle therein, the magnet producing a basic magnetic field having a homogeneity volume within the patient receptacle. Auxiliary components in the form of coils or ferromagnetic elements are disposed relative to the magnet to selectively spatially displace the homogeneity volume, either by selectively activating current flowing through the respective coils, or by selective positioning of the ferromagnetic elements.
15 Citations
11 Claims
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1. A magnet assembly for a magnetic resonance imaging apparatus, said magnet assembly comprising:
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a magnet having a patient receptacle therein, said magnet producing a basic magnetic field having a homogeneity volume at a defined volume location; and
auxiliary means disposed relative to said magnet for selectively, temporarily spatially displacing substantially an entirety of said homogeneity volume from said defined volume location to a different volume location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification