Abstract #4295

Single-shot T2 mapping through overlapping-echo detachment planar imaging (OLED) sequence

Congbo Cai¹, Yuchuan Zhuang², Shuhui Cai³, Jianhui Zhong², and Zhong Chen³

¹Department of Communication Engineering, Xiamen University, Xiamen, China, People's Republic of, ²Department of Imaging Sciences, University of Rochester, ROCHESTER, NY, United States, ³Department of Electronics Science, Xiamen University, Xiamen, China, People's Republic of

Magnetic Resonance parameters mapping can provide useful quantitative information for characterization of tissue properties. However, the long acquisition time usually hinder the real-time MR parameter mapping. In this abstract, a novel single-shot T2 mapping method was proposed based on spin-echo EPI method. Two overlapping echo signals with the different T2 weighting were obtained simultaneously. A detachment algorithm based on joint sparsity constraint was proposed to separate the two echo signals. The robustness and efficiency of the sequence were demonstrated through phantom experiments. The reliable T2 mapping can be obtained in the order of milliseconds.

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