Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Morphology 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)
