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Abstract #3810

Reduction of B1 Inhomogeneity Using B1 Rectifying Fin at High Fields

Yukio Kaneko1, Hideta Habara1, Yoshihisa Soutome1, Yoshitaka Bito1

1Central Research Laboratory, Hitachi, Ltd., Kokubunji-shi, Tokyo, Japan

B1 inhomogeneity in a human body increases as static magnetic field strength becomes higher, and various RF control methods have been developed to reduce B1 inhomogeneity. However, B1 inhomogeneity still remains in some cases of abdominal imaging, and a more effective method is necessary. We have proposed a new method using a B1 rectifying finish combined with B1 shimming. Both electromagnetic simulation with phantom and experiments with a human abdomen were conducted, and we confirmed that the B1 rectifying fin, used with B1 shimming, was more effective in reducing B1 inhomogeneity than B1 shimming alone.