Abstract #2467
On the Quantification of Turbulent Kinetic Energy using Phase-Contrast MRI
Christian Binter 1 , Utku Glan 2 , Verena Knobloch 1 , Markus Holzner 2 , and Sebastian Kozerke 1,3
1
Institute for Biomedical Engineering,
University and ETH Zurich, Zurich, Switzerland,
2
Institute
of Environmental Engineering, ETH Zurich, Zurich,
Switzerland,
3
Imaging
Sciences and Biomedical Engineering, King's College
London, London, United Kingdom
The estimation of energy stored in turbulent flow could
provide detailed information about the losses due to
obstructed blood flow. Phase-Contrast MRI and Particle
Tracking Velocimetry in a replica of the human aortic
arch have been employed to quantify this Turbulent
Kinetic Energy and assess the influence of voxel size,
non-Gaussian velocity distributions and turbulent time
scales. Results showed that up to a voxel size of 2 mm
the error due to the assumptions of the signal model
should be below 5%. However, direct comparison of MRI
and Particle Tracking data show systematic errors not
explainable by the signal model.
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