Steady-state 4D Flow using double gating: a healthy volunteer study
Stanislas Rapacchi 1,2 , Yutaka Natsuaki 3 , Paul J Finn 2 , Gerhard Laub 4 , Daniel Ennis 2 , and Peng Hu 2
CRMBM, Aix-Marseille University, Marseille,
UCLA, los angeles, CA, United States,
Los Angeles, CA, United States,
CA, United States
4D Phase-Contrast MRI (4D Flow) has become a choice
modality for assessment of flow patterns in complex
vasculatures, such as congenital heart diseases. For
thoracic imaging, the technique relies on ECG-triggering
and an imaging navigator to compensate for breathing
motion. The acquisition of the navigator requires
switching off the 4D flow acquisition, thus breaking the
steady-state and missing a phase in the cardiac cycle.
We propose to use double gating from ECG and a
pressure-driven belly-belt to monitor breathing motion
while maintaining continuous steady-state.
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