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.