Figure 1.
Inclusion chart for our analysis of 351 patients who underwent a successful TAVI procedure.
Figure 2.
Examples of anatomic measurements at the aortic annulus performed for this study:
isotropic small field-of-view CTA dataset of a 78 year old female patient with severe aortic stenosis, A) sagittal reformation and B) coronal reformation showing the orientation of the aortic annulus plane, C) double-oblique reformation of the aortic valve annulus, demonstrating the diameter of the long axis (black line), the diameter of the short axis (blue line), the annulus circumference (red polygonal), and annulus area (yellow shading). D) angiographic image after implantation of a 26 mm model of the Edward Sapien XT valve prosthesis demonstrates no paravalvular leakage.
Table 1.
Patient parameters, N(%), mean ± SD or median [interquartile range] and summary of implanted valve sizes.
Table 2.
Interobserver Agreement for anatomical measurements of the aortic root reported as Intraclass Correlation Coefficient (ICC) and parameters of Bland-Altman-Analysis.
Table 3.
Primary anatomic parameters of the aortic annulus, N(%), mean ± SD or median [interquartile range] as well as “virtual diameters” derived from the mean of long axis and short axis, from annulus circumference and annulus area.
Figure 3.
Summary chart displaying major anatomic parameters (length of long and short axis; circumference-derived and area-derived virtual diameter) in patients in whom the small, medium or large size model was considered optimal for A) the CoreValve valve and the B) Edward Sapien XT valve.
Except for the large vs. medium CoreValve size, all differences were statistically significant (p<0.05).
Table 4.
Multi-Class AUC’s as measures for the predictive value of the respective anatomic parameters for the valve size considered optimal by the implantation team.