1. From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas’ Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research...