Congbo Cai1, Ying Chen1, Jing Li1, Lin Chen1, Shuhui Cai1, Jianhui Zhong2, Zhong Chen1
1Department of Electronics Science, Xiamen University, Xiamen, Fujian, China; 2Departments of Radiology and Physics and Astronomy, University of Rochester, Rochester, NY, United States
A new reconstruction algorithm based on generalized Fourier transform is explored for sequences with linear frequency-swept excitation. A hybrid-encoding sequence is tested. This algorithm improves the spatial resolution of the images while maintaining the excellent field perturbation immunity of the sequence. in vivo experiments are performed on coronal and sagittal planes of rat. Compared to the traditional gradient echo sequence and spin-echo EPI sequence, the artifacts induced by motion effects, susceptibility variation and Nyquist ghost are greatly relieved in the images produced by the hybrid-encoding sequence.
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