Breast coil for magnetic resonance recordings of the breast
AssigneeSiemens Aktiengesellschaft
InventorStephan Biber
Life of this patent
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Abstract
A breast coil for a magnetic resonance tomography device for the production of magnetic resonance recordings of female breasts includes a coil housing having a breast recess to accommodate a breast and a number of coil elements. At least one of the coil elements forms an HF correction coil element and has a circuit arrangement to switch over the HF correction coil element between an HF correction mode of operation and another mode of operation. The HF correction coil element is constructed such that in the HF correction mode of operation, the HF correction coil element resonates passively with a B1 field emitted by a transmission antenna arrangement of the magnetic resonance tomography device, and influences a local B1 field distribution during a magnetic resonance recording.
Claims20
A breast coil for a magnetic resonance tomography device for producing magnetic resonance recordings of female breasts, the breast coil comprising:
- a coil housing comprising a breast recess to accommodate a breast;
- a plurality of coil elements, wherein at least one coil element of the plurality of coil elements forms a high frequency (HF) correction coil element;
- and
- a circuit arrangement operable to switch the HF correction coil element between an HF correction mode of operation and another mode of operation,
- wherein the HF correction coil element is configured such that in the HF correction mode of operation, the HF correction coil element resonates passively with a B1 field emitted by a transmission antenna arrangement of the magnetic resonance tomography device, and influences a local B1 field distribution during a magnetic resonance recording.
A magnetic resonance tomography device for producing magnetic resonance recordings of a female breast, the magnetic resonance tomography device comprising:
- a breast coil comprising:
- a coil housing comprising a breast recess to accommodate a breast;
- a plurality of coil elements, wherein at least one coil element of the plurality of coil elements forms a high frequency (HF) correction coil element;
- and
- a circuit arrangement operable to switch the HF correction coil element between an HF correction mode of operation and another mode of operation,
- wherein the HF correction coil element is configured such that in the HF correction mode of operation, the HF correction coil element resonates passively with a B1 field emitted by a transmission antenna arrangement of the magnetic resonance tomography device, and influences a local B1 field distribution during a magnetic resonance recording.
A method for producing magnetic resonance recordings of a breast in a magnetic resonance tomography device, the magnetic resonance tomography device comprising a transmission antenna arrangement and a breast coil, the breast coil comprising a coil housing having a breast recess to accommodate a breast, and a plurality of coil elements, the method comprising:
- emitting a B1 field with the transmission antenna arrangement;
- and
- receiving, by a coil element of the plurality of coil elements, magnetic resonance signals excited in the breast as a result of the B1 field,
- wherein when the B1 field is being emitted, the coil element of another coil element of the plurality of coil elements is switched into an HF correction mode of operation, so that the coil element or the other coil element resonates passively with the B1 field and influences a local B1 field distribution.
Dependencies are inferred from the claim text.