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US 11,885,859 B2Granted
Passive shim tray for magnetic resonance examination system
AssigneeKoninklijke Philips N.V.
InventorPeter Forthmann
Life of this patent
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Abstract
A shim tray (10) for a main magnet system of a magnetic resonance examination system comprises a plurality of shim pockets (11), of which an individual shim pocket has side walls (21, 42) forming an open channel (11). Two opposite lateral side walls (21) have insertion profiles (22) to receive an end shim-element (13) at least one open channel's end. Essentially the entire volume of the channel of the shim pocket is available to hold passive shim elements.
Claims16
A shim tray comprising:
- a plurality of shim pockets, wherein each shim pocket is defined by lateral side walls extending in a lateral direction and longitudinal side walls extending in a longitudinal direction to form an open channel configured to receive a plurality of ferromagnetic shim elements, wherein the lateral side walls have insertion profiles configured to receive an end shim-element of the plurality of ferromagnetic shim elements at least at one end of the shim pocket for holding remaining shim elements of the plurality of ferromagnetic shim elements in position, and wherein the end shim element has protrusions that correspond with the insertion profiles.
A shim tray comprising:
- a plurality of longitudinal rails extending in a longitudinal direction;
- a plurality of lateral side walls extending in a lateral direction between the plurality of longitudinal rails;
- and
- a plurality of shim pockets formed by opposing lateral side walls of the plurality of lateral side walls and opposing longitudinal side walls of the plurality of longitudinal rails between the opposing lateral side walls, wherein each shim pocket of the plurality of shim pockets is configured to receive a plurality of ferromagnetic shim elements, including an end shim element positioned at a first end of the shim pocket for holding remaining shim elements of the plurality of ferromagnetic shim elements in position, wherein the end shim element has protrusions corresponding with indents in the opposing lateral side walls of the shim pocket configured to secure the end shim element in place.
1 more element
Dependencies are inferred from the claim text.