Fig. 7From: The role of computed tomography in pre-procedural planning of cardiovascular surgery and interventionMorphology and calcification of aortic valve. a Bicuspid morphology with fused leaflets with no Calcification (grade 1). b Trileaflet morphology with small isolated spots of mild calcification (grade 2). c Trileaflet valve with multiple, large spots of moderate calcification (grade 3). d Trileaflet valve with extensive calcification of all cusps (grade 4)Back to article page