Prediction of Paravalvular Regurgitation After Transcatheter Aortic Valve Implantation by Computed Tomography: Value of Aortic Valve and Annular Calcification

Protruding annular calcium greater than 4 mm predicts moderate to severe PAR after transcatheter aortic valve implantation. Increasing annular calcium size is another predictor, whereas adherent calcium has a “sealing” effect.