Abstract #4865

Vortex ring reveals a novel non-invasive hemodynamic biomarker associated with the location of maximum pressure drop in arterial stenosis

Amirkhosro Kazemi^1,2, Sean Callahan^1,2, Ruponti Nath^1,2, Marcus Stoddard^2,3, and Amir A. Amini^1,2

¹Electrical and Computer Engineering, University of Louisville, Louisville, KY, United States, ²Robley Rex VA Medical Center, Louisville, KY, United States, ³Cardiovascular Division, University of Louisville, Louisville, KY, United States

Synopsis

We propose vortex ring as a new indicator of the location of maximum pressure drop along a phantom model of arterial stenosis. We investigated details of the flow structure of post stenotic jet with presence of the vortex ring in stenotic phantoms with 87% reduction in area using CFD velocities and 4D flow MRI. The pressure, velocity, and vorticity fields were quantitatively analyzed with the presence of the vortex ring in the spatiotemporal domains. It was found that the location of the vortex ring is associated with the location of the maximum pressure drop, axial velocity, and vorticity magnitude.

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