Abstract #4200

Sliding-window Reconstruction Strategy for Accelerating the Acquisition of MR Fingerprinting

Xiaozhi Cao¹, Congyu Liao¹, Zhixing Wang¹, Huihui Ye¹, Ying Chen¹, Hongjian He¹, Song Chen¹, Hui Liu², and Jianhui Zhong¹

¹Center for Brain Imaging Science and Technology, Department of Biomedical Engineering, Zhejiang University, Hangzhou,Zhejiang, China, People's Republic of, ²MR Collaboration NE Asia, Siemens Healthcare, Shanghai, China, People's Republic of

The original MRF method uses one spiral interleaf acquired within each time point to reconstruct one image, leading to dramatic fluctuation in the signal evolution caused by undersampling error. In this work, a sliding window is utilized to select multiple interleaves to generate one full-sampled image for each step so that the fluctuation in signal evolution could be significantly alleviated. Therefore our proposed method can reach an expected result with reduced time points. The results demonstrate that the proposed method can reduce the acquisition time from about 11s to 5.6s or even less.

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