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Abstract #5065

Accelerating Phase Modulation for Correcting EPI Geometry Distortion by Modern GPGPU Parallel Computation.

Yao-Hao Yang1, Teng-Yi Huang, Fu-Nien Wang2, Nan-Kuei Chen3

1National Taiwan University of Science and Technology, Taipei, Taiwan; 2Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua university; 3Brain Imaging and Analysis Center, Duke University Medical Center

Phase modulation combined with field mapping can correct the EPI geometry distortion but it is a time-consuming algorithm. We proposed to incorporate the GPGPU technique into phase-modulation calculation to reduce the whole computation time. Applying on the PROPELLER EPI data set, the parallel algorithm reduced the computation time from ~1750 seconds to ~100 seconds. We conclude that the GPU computing is a promising method to accelerate EPI geometry correction.