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Abstract #3833

Super-Resolved Two-Dimensional Spatiotemporally-Encoded Single-Scan MRI with Spiral Sampling

Jing Li1, Lin Chen1, Congbo Cai2, Shuhui Cai1, Zhong Chen1

1Department of Electronic Science, Xiamen University, Xiamen, Fujian, China; 2Department of Communication Engineering, Xiamen University, Xiamen, Fujian, China

Last decades have witnessed a continuous growth of single-scan MRI, both in scientific research and clinical application. Spatiotemporally encoded (SPEN) MRI has an intrinsic immunity to field inhomogeneity. However, its phase encoding dimension is always sub-Nyquist sampling for ultrafast acquisition, which leads to aliasing artifacts. In this study, we propose a spiral sampling method for two-dimensional SPEN single-scan MRI. It can not only maintain the advantages of SPEN method, but also eliminate the aliasing artifacts due to undersampling. In combination with a super-resolved reconstruction based on the singular value decomposition, images with good quality can be obtained.