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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