题目内容
关于主动脉瓣赘生物的超声特点,错误的是( )
2021-10-14
A.呈团块状、息肉状或绒毛絮状回声
B.—般活动度小
C.随血流漂摆于心腔内或大动脉内
D.早期回声较弱,陈旧的回声较强
E.可单发或多发
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