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Abstract #4884

B 1 Homogenization and Local SAR Reduction Using B 1 -control Receive Array Coil at 3T

Yukio Kaneko 1 , Yoshihisa Soutome 1,2 , and Hisaaki Ochi 1

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

B1 inhomogeneity increases as the strength of a magnetic field increases. Various methods to reduce the B1 inhomogeneity have been developed. However, B1 inhomogeneity still remains in some cases of abdominal imaging. A more effective method is therefore required. In this study, a B1-control receive array coil (BRAC), which has the inductive mode during the RF transmit period, was designed. The B1 field and local SAR field in a human model were calculated in FDTD simulation. It is shown that the BRAC can reduce B1 inhomogeneity and local SAR in the human body.

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