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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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