关键词:深度学pv1Hm7BVBxZ2zW5RrS+jZiqFWbdCXubZxR+EuLJvrTk=习;主动脉瓣狭9OR0mp9tAFvUgoc8s+zemLuKQiylh8PE7KNcMEcj5es=窄;超声心动图;经胸心脏超声;人工智能