Abstract #3132
Transmit Power Reduction and B 1 + Homogenization Using 4-channel Regional RF Shimming for Shoulder Imaging at 3T
Yukio Kaneko 1 , Yoshihisa Soutome 1,2 , Kosuke Ito 2 , Masahiro Takizawa 2 , Hideta Habara 1,2 , Yusuke Seki 1 , Tetsuhiko Takahashi 2 , Yoshitaka Bito 2 , and Hisaaki Ochi 1
1
Central Research Laboratory, Hitachi Ltd.,
Kokubunji-shi, Tokyo, Japan,
2
Hitachi
Medical Corporation, Kashiwa, Chiba, Japan
The B1 inhomogeneity in a human body increases as the
strength of a static magnetic field increases. Previous
studies showed the effect of the number of RF transmit
channels in RF shimming. However, the effect for a
partial region of the shoulder in 3T has not yet been
investigated. In this study, numerical simulation was
used to investigate the effect of the number of RF
transmit channels for regional RF shimming in the
shoulder region in 3T. The results show that 4-channel
RF shimming can contribute to improve the B1 homogeneity
and reduce the transmit RF power more than 2-channel RF
shimming.
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