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Abstract #1332

Pressure Difference Measurements in Stenotic Flow Phantom: Comparison of 4D Flow MRI, Computational Fluid Dynamics, and Pressure Wire Measurements

Elizabeth Janus Nett1, Leonardo Rivera1, Sylvana Garca-Rodrguez2, Alejandro Roldn-Alzate3, Oliver Wieben1, 3, Kevin M. Johnson1

1Medical Physics, University of Wisconsin, Madison, WI, United States; 2Mechanical Engineering, University of Wisconsin, Madison, WI, United States; 3Radiology, University of Wisconsin, Madison, WI, United States

In this study, we compared 4D Flow MRI pressure measurements in a stenosis phantom with pressure catheter measurements and computation fluid dynamics (CFD). Pressure gradients calculated from 4D PC MRI data were comparable to those obtained from pressure probe and CFD. Pressures differences calculated using the Navier-Stokes and Bernoulli methods were also compared for 4D Flow and CFD data and differences as large as 18% were found.

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Keywords

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