Transcatheter Aortic and Mitral Valve Replacements.

Amid rapid growth in transcatheter valvular interventions computed tomography (CT) has emerged as a pivotal noninvasive imaging resource that can be used throughout many stages of the transcatheter heart valve process, enhancing procedural success and efficacy. It affords a three-dimensional assessment of the aortic and challenging saddle-shaped mitral annulus, facilitating appropriate device selection, sizing, and preprocedural prediction angles for prosthetic deployment. Postprocedural imaging allows documentation of procedural success, evaluation of prosthesis positioning, and identifying asymptomatic complications. This article provides an overview of the role of CT in both trancatheter aortic valve repair (TAVR) and transcatheter mitral valve replacement (TMVR).