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Abstract #2098

Personalized 3D-printed compliant aortic valve phantom enhances the use of full velocity profile for trans-valvular pressure drop estimation

Joao Filipe Fernandes1, Harminder Gill1, Julio Sotelo2,3,4, Shu Wang1, Alessandro Faraci1, Cristian Montalba5, Jesus Urbina6, Ronak Rajani1, David A. Nordsletten1,7, Kawal Rhode1, Sergio Uribe6,8,9, and Pablo Lamata1
1School of Biomedical Engineering and Imaging Sciences, King’s College, London, United Kingdom, 2School of Biomedical Engineering, Universidad de Valparaiso, Valparaiso, Chile, 3Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 4Millennium Nucleus for Cardiovascular Magnetic Resonance, ANID - Millennium Science Initiative Program, Santiago, Chile, 5Biomedical Imaging Center, Pontificia Universidad Catolica de Chile, Santiago, Chile, 6Radiology Department, School of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile, 7Departments Biomedical Engineering and Cardiac Surgery University of Michigan, Ann Arbor, MI, United States, 8Biomedical Imaging Center, Pontificia Universidad Catolica de Chile, Santiago, Chile, 9Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile

Aortic valve (AV) conditions cause extra burden to the heart and frequently lead to clinicalintervention. In the present study we set a 4D-flow-MRI framework to evaluate in-vitro personalizedcompliant 3D-printed AV. We evaluated a healthy and three diseased AV under rest to stresspulsatile flow conditions. The results obtained provide further evidence that trans-valvular non-invasive pressure drop is estimated more accurately accounting for full velocity profile, via thesimplified advective work-energy relative pressure (SAW), than accounting solely for the maximalvelocity as it is clinically stablished. Both the methodology and the findings can potentially improveclinical decision-making.

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