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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