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Abstract #4713

The Effect of Sliding Window Reconstruction with Multiplexed-Sensitivity Encoding on Multi-shot Resting-State fMRI Data

Shihui Chen1, Chia-Wei Lee2, and Hing-Chiu Chang1,3
1Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong, Hong Kong, 2GE Healthcare, Taiwan, Taiwan, 3Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, Hong Kong


High-resolution 4-shot multi-echo resting-state fMRI (RS-fMRI) can be achieved by acquiring data in a sliding window manner, and thus the composite full k-space for MUSE reconstruction can be obtained by combining the segments from the consecutive time points. However, the sliding window operation may smooth the time courses and lead to a similar effect as applying a moving average filter. In this study, we aimed to investigate the effect of k-space data sharing from consecutive time points acquired with different TRs, and to determine a feasible TR for the acquisition and reconstruction scheme for high-resolution 4-shot multi-echo RS-fMRI with MUSE.

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