Joseph Busher1, Chenhao Sun2, Travis Carrell1, Edith Valle2, Steven M. Wright1,2, and Mary McDougall1,2
1Biomedical Engineering, Texas A&M University, College Station, TX, United States, 2Electrical and Computer Engineering, Texas A&M University, College Station, TX, United States
1Biomedical Engineering, Texas A&M University, College Station, TX, United States, 2Electrical and Computer Engineering, Texas A&M University, College Station, TX, United States
This work describes two interleaved nine-leg birdcages for geometric decoupling from a planar array for 1H and 23Na at 4.7T. The symmetric design was shown to geometrically decouple from a six element array at both frequencies, thus enabling multinuclear multichannel imaging experiments.
Figure 1:
Photographs of the coil (A) Coil inside of shield (B) Coil showing alternating
rungs and match/tune configuration for the hydrogen port. (C) Close up view of
the jumpers. The hydrogen coil can be
identified by the greater number of breakup capacitors on the legs, the
capacitors on the end rings bridging the sodium legs, and the shorter length
compared to the sodium coil. (D)
Cross-sectional block diagram showing field orientations with respect to the
legs and the respective feed ports.
Figure 3: Image data. (A) Birdcage Transmit/Receive with loop
terminated in 50Ω load. (B)
Birdcage transmit, loop receive for hydrogen.
(C) Birdcage transmit,loop receive for sodium