Figure 4. Severe aortic valve stenosis in a 57-year-old patient. Double-oblique reconstruction of contrast-enhanced retrospectively ECG-gated multi-detector row CT data set shows heavily calcified bicuspid aortic valve with large calcific deposit (grade 4, black arrow). The aortic valve leaflets (white arrow) and the aortic valve annulus (arrowheads) are clearly visible. Image quality was rated as good (grade 3, good visibility of the anatomic details of the aortic valve).