Figure 2b. Severe aortic valve stenosis in a 77-year-old patient. (a) Double-oblique reconstruction of contrast-enhanced retrospectively ECG-gated multi-detector row CT data set demonstrates a moderately calcified tricuspid aortic valve (grade 3, multiple larger areas of calcification; large arrows). Image quality was rated as excellent (grade 4, excellent visibility of the anatomic details of the aortic valve, including the aortic valve leaflets [small arrow], free edges of the aortic valve leaflets [black arrowheads], and the aortic valve annulus [white arrowheads]). (b) Intraoperative status of the calcified aortic valve in the same patient. The calcification (large arrows) of the aortic valve was rated as grade 3. Note aortic valve leaflets (small arrow) and free edges of the aortic valve leaflets (arrowheads).