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Abstract #2740

Robust phase contrast correction with parallel imaging

Ana Beatriz Solana Snchez 1 , Piero Ghedin 2 , Ek Tsoon Tan 3 , Christopher J. Hardy 3 , and Anja Brau 2

1 GE Global Research, Garching bei Muenchen, Bayern, Germany, 2 GE Healthcare, Garching bei Muenchen, Bayern, Germany, 3 GE Global Research, Niskayuna, New York, United States

Phase Contrast MRI provides quantitative blood velocity and net flow measurements, but its accuracy is affected by residual phase errors, limiting the clinical use of this technique in both congenital and acquired heart diseases. Background correction fitting techniques have been proposed to eliminate these errors. However, the appearance of aliased static tissue in the Field of View (FOV) severely impacts the accuracy of any static-tissue fitting algorithm. Here, we quantify this effect for different levels of FOV aliasing and we demonstrate that the use of parallel imaging prevents phase-encoding aliasing and hence improves the robustness of background phase-based correction techniques.

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