In this 4D flow MRI study, ex vivo beating pig heart models in an MR-compatible setup mimicking human physiological conditions were used to investigate flow alterations after implantation of artificial valves designed for transcathether aortic valve implantations (TAVI). Two pig hearts had implanted TAVI valves (one with and one without attachment to the aortic sinuses) and were compared to five pig hearts without valve implantation. For both pig hearts with implanted valves, substantial aortic backflow, and thus paravalvular leakage, was observed. The ex vivo set-up presented is thus suitable for cardiac flow experiments.
This abstract and the presentation materials are available to members only; a login is required.