Table 1. TAVR CT analysis steps.

(I) Evaluation of the aortic annulus and root (Figures 1,2)     - measurement of aortic annular minimal and maximal diameter, circumference, and area     - measurement of distance between annular plan and origin of coronary ostia     - measurement of the diameter at the level of the aortic root, sino-tubular junction (STJ), and proximal ascending aorta     - description of root plane using angiographic coordinates

(II) Valvular and ventricular function analysis (Figure 3)     - planimetry of the AVA (at leaflet tips in systolic window)     - leaflet opening     - assessment of ejection fraction

(III) Analysis of the aorta and iliac arteries (Figures 4,5)      - diameter measurements at the level of the thoracic and abdominal aorta      - Semi-quantitative description of wall calcification and tortuosity      - measurement of minimal luminal diameter at the level of the common iliac artery (CIA), external iliac artery (EIA), and common femoral artery (CFA)      - semi-quantitative description of wall calcification and tortuosity