Small FOV Imaging Using Wavelet Encoding with 2 Dimensional RF Pulses and Gradient Echo

Hacene Serrai¹, Richard Young¹

This paper address the problem of folding in the small FOV MR imaging by replacing the usual phase encoding (Fourier encoding) by wavelet encoding. Two dimensional radio-frequency pulses are inserted into a Gradient-Echo sequence where phase encoding gradient is removed. Slice selection and wavelet encoding steps are simultaneously achieved with the 2D RF pulse, which plays the role of the wavelet functions. They are translated and dilated by changing the gradient strength and shifting the frequency of the RF pulses. The results show that wavelet encoding provides images without aliasing while preserving the object information.