Radio-frequency antenna for a magnetic resonance system
AssigneeSiemens Aktiengesellschaft
InventorHelmut Greim
Life of this patent
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Abstract
A radio-frequency antenna for a magnetic resonance system has a basic element with two end rings and a number of antenna rods, and a radio-frequency mirror. The end rings are arranged concentrically relative to an antenna axis can and are axially offset from one another. The antenna rods are arranged around the antenna axis and connect the end rings. The radio-frequency mirror is inductively coupled to the end rings and the antenna rods. It limits a magnetic resonance excitation signal emitted by the antenna and/or a magnetic resonance signal received by the antenna axially at one side.
Claims17
A radio-frequency antenna for a magnetic resonance apparatus comprising:
- a basic element and a radio-frequency mirror;
- said basic element comprising two end rings and a plurality of antenna rods, said end rings being disposed concentrically around an antenna axis and being axially offset relative to each other and connecting said end rings to each other;
- and
- said radio-frequency mirror being galvanically separated from said end rings and said antenna rods, and being inductively coupled to said end rings and said antenna rods to axially limit an antenna signal at one side of said basic element, said antenna signal being selected from the group consisting of an excitation signal emitted by said basic element and a magnetic resonance signal received by said basic element.
Dependencies are inferred from the claim text.