Energy loss and turbulent formations reveal the pressure loss in coarctation flows: A novel 4D Flow MRI-Based quantification method using a finite element approach

Julio Sotelo, Jesús Urbina, Cristian Montalba, Israel Valverde, Cristian Tejos, Pablo Irarrazaval, Marcelo Andia, Daniel E Hurtado, Sergio Uribe

Abstract

Aortic coarctation (CoA) cause an irreversible pressure loss post-CoA given by the energy dissipation, increasing the ventricular workload. Turbulent flows through CoA generate an irreversible damage in the surrounding tissue for mechanical stresses. We implement a finite elements method to obtain 3D maps of energy loss, kinetic energy, vorticity and helicity from 4D flow data. We performed an in-vitro study that related the pressure gradient, pulse wave velocity and elastic modulus with the energy loss and vorticity and helicity parameters. Concluding that our method may allow assessing the severity of the CoA and the identification of the regions affected.

Más información

Título de la Revista: ENERGY
Volumen: 27
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2020
URL: https://www.researchgate.net/profile/Julio-Sotelo-2/publication/304049406_Energy_loss_and_turbulent_formations_reveal_the_pressure_loss_in_coarctation_flows_A_novel_4D_Flow_MRI-Based_quantification_method_using_a_finite_element_approach/links/5e57d04d92851cefa1c8649b/Energy-loss-and-turbulent-formations-reveal-the-pressure-loss-in-coarctation-flows-A-novel-4D-Flow-MRI-Based-quantification-method-using-a-finite-element-approach.pdf