Fig. 5From: Imaging in Transcatheter Aortic Valve Replacement (TAVR): role of the radiologistAortic annulus shape before and after TAVR. Aortic annulus has an oval shape with maximum and minimum diameters (a). The minimum diameter usually corresponds to the diameters measured with TTE and TEE. This oval shape will be transformed into a more circular shape after TAVR is performed (b)Back to article page