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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