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Abstract #3841

Self-Decoupling Elements of 8-Channel 7T Head Antenna

Hideta Habara1, Yoshitaka Bito1, Hisaaki Ochi1, Yoshihisa Soutome1, Yukio Kaneko1, Masayoshi Dohata1,2, Hiroyuki Takeuchi2, Tetsuhiko Takahashi2

1Central Research Lab., Hitachi Ltd., Kokubunji, Tokyo, Japan; 2Hitachi Medical Corporation, Kashiwa, Chiba, Japan

Multichannel transmit antennas are important for higher field MRI because the RF shimming and transmit sense methods are very effective for correcting B1 inhomogeneity. However, decoupling of the multichannel antenna to the neighborhood channels is difficult. To overcome this problem, we propose to replace linear conductive elements with meandering or snaking ones. An 8-channel 7T head antenna was modeled and the S-parameters and B1+ map were calculated using electromagnetic field simulation. An ordinary microstrip line antenna was also modeled for comparison. The S12 parameter of the snaking elements achieved -12 dB without any decoupling capacitor.