mild mitral calcificationmild calcification of the aortic valvemild calcification of mitral valvemild aortic valve sclerosisaortic atherosclerosis calcificationmoderate aortic insufficiencyaortic thrombusmild paraseptal emphysemamild aortic atherosclerosisabdominal aortic atherosclerosishow to diagnose aortic stenosisaortic stenosis guidelines