Abstract #0091

Chronological 4D Flow MRI Assessment of Pulmonary Artery Stenosis Stent Treatment

Ryan Pewowaruk¹, Klarka Mendrisova², Luke Lamers³, Chris Francois⁴, and Alejandro Roldán-Alzate^1,2,4

¹Biomedical Engineering, University of Wisconsin - Madison, Madison, WI, United States, ²Mechanical Engineering, University of Wisconsin - Madison, Madison, WI, United States, ³Pediatrics, University of Wisconsin - Madison, Madison, WI, United States, ⁴Radiology, University of Wisconsin - Madison, Madison, WI, United States

Branch pulmonary artery stenosis, a common complication after surgical repair of congenital heart disease, is treated with intravascular stenting. As the acute and chronic effects of stenting are unknown this study uses 4D Flow MRI to serially monitor hemodynamics in a porcine model of pulmonary artery stenosis. Intervention increases flow through the stenosed artery, but not to a normal value. Chronologically, stenosis flow is found to increase immediately after stenting and then remain constant.

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