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
University of California, San Francisco, San
Francisco, California, United States,
of California, San Francisco, California, United States,
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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