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Abstract #2447

PROPELLER-EPI Improved by 2D Phase Cycled Reconstruction

Hing-Chiu Chang1, 2, Nan-Kuei Chen3, Tzu-Chao Chuang4, Chun-Jung Juan5, Ming-Long Wu6, 7, Hsiao-Wen Chung2, 5

1Global Applied Science Laboratory, GE Healthcare, Taipei, Taiwan; 2Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan; 3Brain Imaging and Analysis Center, Duke University, Durham North Carolina, United States; 4Electrical Engineering, National Sun Yat-sen University, Taiwan; 5Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan; 6Institute of Medical Informatics, National Cheng Kung University, Taiwan; 7Department of Computer Science and Information Engineering, National Cheng Kung University, Taiwan

PROPELLER-EPI consists of EPI signal readout, where the phase inconsistencies between odd and even echoes generate oblique N/2 ghost artifact in each rotating blade. A 2D phase-cycled reconstruction for inherent correction of N/2 ghost without any extra reference scan has been reported recently. In this work, we integrate an improved version of the 2D phase-cycled reconstruction to PROPELLER-EPI, and compare the result to that reconstructed using the 2D reference-based method. 2D phase-cycled reconstruction is particularly suitable for correcting oblique ghost in PROPELLER-EPI without any need of extra reference scan, and thus may broaden the clinical use of the PROPELLER-EPI technique.