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Abstract #4311

Reference-free Nyquist ghost removal in single-shot SPEN MRI using phase-corrected partial Fourier reconstruction

Ying Chen1, Song Chen1, Hui Liu2, Zhong Chen3, and Jianhui Zhong1,4

1Center for Brain Imaging Science and Technology, Zhejiang University, Hangzhou, China, People's Republic of, 2MR Collaboration Northeast Asia, Siemens Healthcare, Shanghai, China, People's Republic of, 3Department of Electronic Science, Xiamen University, Xiamen, China, People's Republic of, 4Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China, People's Republic of

Single-shot SPEN MRI is a technique capable of retaining the time efficiency of single-shot EPI but with significantly reduced geometric distortions. Akin to EPI, the phase inconsistency between even and odd echoes also result in Nyquist ghosts in SPEN images. This work is to present a scheme with more reliable performance than the previously reported Nyquist ghost correction method. Experimental results of human brains and in vivo rats show that the proposed method can remove ghosts without introducing blurring, and unwarping procedures can be conducted on the ghost-corrected data for further distortion correction.

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