| 摘要 |
A birdcage coil ( 16 ) used in conjunction with a magnetic resonance imaging apparatus includes a first conductive loop ( 81, 581 ), a second conductive loop ( 82, 582 ), and a plurality of first conductor rungs ( 80, 580 ) disposed between the first and second conductive loops. A third conductor ( 83, 83'', 583 ) is coupled to the second conductive loop at resonance frequencies, such as by second conductor rungs ( 84, 84'', 584 ). The birdcage coil also includes switches ( 590 ) for switching the birdcage coil at least among: 1) an RF transmit mode to operate as an RF transmit coil; and 2) an RF receive mode to operate as an RF receive coil.
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