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Abstract #2726

Application of full turbulent tensor in estimation of MR-based relative pressure

Sarah Kefayati 1 , Henrik Haraldsson 2 , Beln Casas Garcia 3 , Jonas Lantz 3 , Tino Ebbers 3 , and David Saloner 2

1 University of California, San Francisco, San Francisco, California, United States, 2 University of California, San Francisco, California, United States, 3 Linkping University, Sweden

Due to clinical significance, estimation of pressure changes are normally desired across a region with restricted blood flow that can favor turbulence production. Recent advances in magnetic resonance velocimetry enable velocity-based estimation of relative pressure without the effects of turbulence. However, laminar assumption for turbulent flow results in significant errors in solving the pressure equations. This study investigates the importance of including the full-turbulent tensor components (both normal and shear Reynolds stresses) in calculating pressure. Our findings show the significance of taking into account the turbulent property of the flow resulting in notably lower estimation of pressure recovery.

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