Ultrasonography features are: . (-DE) showed distended sinus of Valsalva appearedas hyperechoic sacculation protruding i本组RASV超声表现： 二维超声（－DE）的直接征象：可见乏氏窦扩张呈袋状光带，突入邻近心腔，在破裂的瘤体上可见连续中断的破口；