Aortic Stiffness in Aortic Stenosis Assessed by Cardiovascular MRI: a Comparison Between Bicuspid and Tricuspid ValvesAnvesha Singh,Mark A. Horsfield,Soliana Bekele,John P. Greenwood,Dana K. Dawson,Colin Berry,Kai Hogrefe,Damian J. Kelly,John G. Houston,Prasad Guntur Ramkumar,Akhlaque Uddin,Toru Suzuki,Gerry P. McCann