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Abstract #3228

Combining Phase Information from Phased Array Coils without Phase Unwrapping in Phase Contrast Imaging

Yi Wang1,2, Xingxian Shou1, Hai Luo2, Xiang Zhou2, Bin Wang2, and Leping Zha1,2

1Alltech Medical Systems America, Solon, OH, United States, 2Alltech Medical Systems, Chengdu, People's Republic of China

In phase contrast flow quantitation, high spatial/temporal resolution and parallel imaging often entail the high density multiple phased array receive coils. To overcome ambiguities in coil signal combination introduced by motion, phase wrapping, image noise, and the unknown phase-offset among the coils, we used the k-space complex division of the same coil element signals from both flow compensated (FC) and flow encoded (FE) scans to eliminate the coil sensitivity phase associated with that coil element and then add all phase difference of each elements in complex domain to avoid phase unwrapping for a fast and accurate flow velocity mapping.

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