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Abstract #0942

Improved B1 Homogeneity and Reduced Transmit Power with 4-channel Regional RF Shimming for Breast Imaging at 3 T

Kosuke Ito 1 , Yukio Kaneko 2 , Yoshihisa Soutome 2 , and Masahiro Takizawa 1

1 Hitachi Medical corporation, Kashiwa, Chiba, Japan, 2 Hitachi Ltd, Central Research Laboratory, Kokubunji, Japan

The regional RF shimming using 4-channel RF transmit coil was evaluated for breast imaging in vivo at 3 T. The homogeneity of B1 and relative RF transmit power were compared with QD mode, volume RF shimming mode, and regional RF shimming mode. By using regional RF shimming mode, B1 homogeneity in breast region was improved about 35%, and relative RF transmit power decreased about 18% compared to QD mode. These results show the regional RF shimming can improve B1 homogeneity and decrease RF transmit power simultaneously.

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