normal size of descending aortaaorta normal sizenormal abdominal aorta sizeascending aorta aneurysm sizeascending aorta normal sizeascending thoracic aorta sizenormal size of ascending aorta on echoaverage size of ascending aortanormal size of thoracic aortanormal ascending aorta dimensionsnormal ascending aorta diameterlarge ascending aorta
