Three-dimensional imaging of the aortic valve geometry for prosthesis sizing prior to transcatheter aortic valve replacement

摘要

Transcatheter aortic vaive replacement (TAVR) is established as an alternative treatment option in patients with symptomatic aortic valve stenosis at high risk for cardiovascular surgery and has shown superiority over conservative management in inoperable patients [1,2]. Noninvasive imaging of the aortic valve (AV) geometry plays a central role in TAVR because accurate determination of aortic annular diameters is crucial for appropriate prosthesis sizing [3-5]. Current guidelines define multislice computed tomography (MSCT) with three-dimensional (3D) reconstruction of aortic root geometry as the gold standard for pre-procedural patient selection despite MSCT inherits important limitations [8].