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US 4,733,190 AGranted
NMR local coil with adjustable spacing
AssigneeMedical Advances, Inc.
InventorGerald T. Dembinski
Life of this patent
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Abstract
A local coil assembly for use in NMR imaging includes a base which supports a pair of spaced local coil modules. The size and separation of the local coil modules can be changed without affecting the resonant frequency of the assembly. Each local coil module includes a pair of loop-gap resonators, and the base provides the electrical interconnection of the loop-gap resonators in each module.
Claims7
A local coil assembly for use in NMR imaging which comprises:
- a base;
- a first local coil module mounted to the base and extending upward therefrom;
- a plurality of sockets disposed in the base, each at a different distance from the first local coil module;
- a second local coil module having a connector thereon which mates with each of the plurality of sockets to enable the second local coil module to be connected to the base at any one of the sockets;
- and
- a set of reactive components, each reactive component being connected to a respective one of the sockets such that when the second local coil module is inserted in a socket, the reactive component thereat electrically connects to a resonator in the second local coil module and alters the resonant frequency thereof;
- wherein the values of the respective reactive components are selected such that the second local coil module may be connected to any of said plurality of sockets without any substantial change in the resonant frequency of the assembly.
4 more elements
Dependencies are inferred from the claim text.