Fig. 15From: Imaging in Transcatheter Aortic Valve Replacement (TAVR): role of the radiologistExamples of different sizes of aortic annulus corresponding to different sizes of Medtronic CoreValve prostheses. The measurements of the aortic annulus shown above would be appropriate for (a) Medtronic CoreValve 23Â mm, (b) Medtronic CoreValve 31Â mmBack to article page