Abstract #3076

Single-shot T2 mapping in severe head motion with multiple overlapping-echo detachment planar imaging

Qinqin Yang¹, Jiechao Wang¹, Qizhi Yang¹, Shuhui Cai¹, Hongjian He², Congbo Cai¹, Zhong Chen¹, and Jianhui Zhong^2,3

¹Department of Electronic Science, Xiamen University, Xiamen, China, ²The Center for Brain Imaging Science and Technology, the Collaborative Innovation Center for Diagnosis, and the Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China, ³Department of Imaging Sciences, University of Rochester, Rochester, NY, United States

Subject motion often leads to serious quality degradation of MR images, especially in quantitative MRI. In this study, a novel reconstruction method was proposed for single-shot T₂ mapping based on overlapping-echo detachment planar imaging and synthetic-data-driven learning (SDDL). This method was made robust to severe motion by improved parallel reconstruction and motion correction methods without extra scan. The proposed method was evaluated with human brain experiments. The results show that SDDL-based method can significantly reduce ghosting and motion artifacts in T₂ maps in the presence of randomly and continuously subject movement.

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