The Impact of Aortic Valvular Calcium on Transcatheter Heart Valve Distortion

Figure 1

Transcatheter heart valve distortion and multislice computed tomography analysis. A normal expanded transcatheter heart valve (THV) and distorted THV in a multislice computed tomography (MSCT) volume-rendered view (a). Using the postprocedural MSCT, a 3D-volume-rendered view of THV was constituted. The length of the stent frame on the center of each cusp was measured. Valve distortion score (VDS) was defined as the difference between the longest and shortest stent frame lengths (b). The THV stent frame was geometrically evaluated for maximal and minimal orthogonal diameters at the four levels of THV: THV inflow, native annulus, mid-THV, and THV outflow. The cross-sectional eccentricity index was defined as follows: (1 − short diameter/long diameter) × 100 (c).

(a)

(b)

(c)