| 摘要 |
RF coil apparatus is provided for use in an MR imaging system, wherein the B0 field is oriented in a specified direction. The apparatus comprises a coil structure positioned in selected relationship with the B0 field, the coil structure comprising a pair of elongated coil members in spaced-apart parallel relationship, and a selected number of lateral coil members positioned along the elongated coil members in spaced-apart parallel relationship with one another. A number of first capacitive elements, each of a first capacitance, are selectively positioned along the elongated coil members, and a second capacitive element is included in each of the lateral coil members, each of the second capacitive elements being of a second capacitance. A first coupling network operates the coil structure to selectively transmit and receive a first RF field component directed along a first axis which is orthogonal to the B0 field direction, the first RF field having a frequency determined by a specified relationship between the first and second capacitances. In like manner, a second coupling network operates the coil structure to selectively transmit and receive a second RF field component directed along a second axis which is orthogonal to both the B0 field direction and the first axis, the second RF field component having a frequency likewise determined by the relationship between the first and second capacitances, the first and second capacitances being respectively selected so that the frequencies thereof are equal.
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