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Abstract #1880

Simple Quadrature Volume Antenna Transformed from Loop

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

Quadrature-driven cylindrical volume antennas, such as birdcage or TEM antennas, are indispensable hardware for commercial MRI scanners. However, they consist of many parts, making them complex to build. We introduce a simple quadrature volume antenna having only five parts by transforming a one-loop antenna. If a loop on a cylindrical surface is folded 2N times and the number of current nodes in the loop is 2(N-1), a uniform B1+ field is created in the center of the cylinder. A prototype of a 3T head antenna was made, and a phantom image was obtained.