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Abstract #4289

Design of Elliptical Birdcage Coil with Constant Ring-capacitor Value

Yoshihisa Soutome1, Shin-ichiro Suzuki2, Hideta Habara2, Takahide Shimoda2, and Yoshitaka Bito2

1R&D Group, Hitachi, Ltd., Kokubunji, Japan, 2Healthcare Business Unit, Hitachi, Ltd., Tokyo, Japan

The value of ring capacitors in elliptical birdcage coil (EBC) should be varied gradually according to the location of the ring capacitor in order to generate uniform B1+ field distribution. Usually, it is difficult to adjust the value of the ring capacitor precisely by using fixed capacitors, because the value of the fixed capacitor is discretized. To realize the easy fabrication of EBC, we have designed EBC with constant ring-capacitor value at 1.5T. Simulation and experimental results indicated that the designed EBC generated uniform B1+ field distribution and showed the same transmission efficiency as the conventional EBC.

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