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Abstract #0610

Correction of Chemical-Shift Ghost Artifact in Blipped Controlled Aliasing Parallel Imaging

JaeJin Cho1, Dongchan Kim1, Hyunseok Seo1, Kinam Kwon1, Seohee So1, and HyunWook Park1

1Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, Republic of

Blipped-CAIPI imaging is widely used for fast imaging, which is one of the simultaneous multi-slice imaging methods. Conventional water-fat separation methods can be combined with the blipped-CAIPI technique. However, it results in the chemical-shift ghost artifact because fat signal on slightly shifted position is exited in the slice-selection process. This geometric error in slice-selection generates additional phase cycling, which causes the ghost artifacts on each slice’s fat image. In this abstract, a SENSE-based water-fat separation method is proposed, which considers the additional phase cycling on fat signal and obtains more accurate water-fat separated images.

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