Fig. 2From: Imaging in Transcatheter Aortic Valve Replacement (TAVR): role of the radiologista Balloon-expandable Edwards SAPIEN transcatheter heart valve with bovine pericardial leaflets. The first generation frame was made of stainless steel and the newer version Edwards SAPIEN XT THV is made of cobalt chromium. b The Edwards Sapien THV crimped on delivery catheter balloon. c Fully balloon expanded THV. (Source: Edwards Lifesciences)Back to article page