A Fast Water-Fat Separation Method using Multi Echo Time Encoding and Nonlinear Least Squares Estimation

Water-fat separation is essential technique for accurate diagnosis in many area of MRI. If a parallel imaging method is applied to water-fat separation in the spectral direction, imaging time can be reduced. However, conventional water-fat separation methods including IDEAL cannot use sensitivity difference of multichannel RF coil because water and fat images share the same FOV. In this paper, a new water-fat separation method is proposed by using the coil sensitivity map and by encoding difference of resonant frequency between water and fat.

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