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Abstract #2083

Limits of Turbulent Flow Spectrum Encoding using 4D Flow MRI

Hannes Dillinger1, Charles McGrath1, and Sebastian Kozerke1
1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland

This work employs spectral interpretation of velocity encoding gradients (VEG) to assess their encoding power of fluctuating velocities in turbulent flows. Using CFD and MRI simulations based on particle tracking, it is shown that Reynolds Stress Tensor values are underestimated for VEG frequencies typically used in 4D Flow MRI, while mean velocity estimation is not impacted.

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