Yuji Iwadate1, Kenichi Kanda2, Akira Nabetani1, Tetsuji Tsukamoto1
1Japan Applied Science Laboratory, GE Yokogawa Medical Systems, Hino, Tokyo, Japan; 2MR Engineering, GE Yokogawa Medical Systems, Hino, Tokyo, Japan
Phase based navigator echo analysis is useful in navigator gated imaging but sometimes affected by an inhomogeneous sensitivity of a receiver RF coil. We propose a method that uses virtual large loop coil to obtain a homogeneous phase background. By adding two navigator data sets vectorially, sensitivity of the virtual large loop coil had a homogeneous phase, which resulted in accurate motion detection with phase based navigator echo analysis. Future work will involve the phase compensation to apply to a larger number of coil elements of phased arrays.