Degenerate birdcage coil and transmit/receive apparatus and method for same
First Claim
1. A birdcage coil system for use in conjunction with a magnetic resonance imaging apparatus, the birdcage coil system comprising:
- a birdcage coil tuned to degeneracy, the coil including;
a first conductive loop, a second conductive loop, and a plurality of first conductor rungs disposed between the first and second conductive loops and in electrical connection therewith; and
switching means for switching the birdcage coil at least between;
an RF transmit mode, and an RF receive mode in which in the birdcage coil is adapted to operate as a phased array RF receive coil.
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Accused Products
Abstract
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.
36 Citations
29 Claims
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1. A birdcage coil system for use in conjunction with a magnetic resonance imaging apparatus, the birdcage coil system comprising:
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a birdcage coil tuned to degeneracy, the coil including;
a first conductive loop, a second conductive loop, and a plurality of first conductor rungs disposed between the first and second conductive loops and in electrical connection therewith; and
switching means for switching the birdcage coil at least between;
an RF transmit mode, and an RF receive mode in which in the birdcage coil is adapted to operate as a phased array RF receive coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 29)
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12. A birdcage coil for use in conjunction with a magnetic resonance imaging apparatus, the birdcage coil comprising:
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a first conductive loop;
a second conductive loop;
a plurality of first conductor rungs disposed between the first and second conductive loops and in electrical connection therewith; and
a third conductor spaced apart from the second conductive loop and connected to the second loop at radio frequencies. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. (canceled)
Specification