Effect of Number of RF Transmit Channels for RF Shimming in Partial Region

Yukio Kaneko¹, Yoshihisa Soutome¹, Hideta Habara¹, Yoshitaka Bito²

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 for the entire region of the torso. However, the effect for a partial region of the torso in 3T has not yet been investigated. In this study, numerical simulation has been used to investigate the effect of the number of RF transmit channels for regional RF shimming in the torso region in 3T. The results show that 4-channel and 8-channel RF shimming can contribute to improving the B1 inhomogeneity in a partial region.