肝切面图内见边界清楚之结节且无包膜、周边回声强、内部回声略低于周边并呈筛孔状回声()肝切面图内见强回声或低回声结节、边缘不规则、周边有晕环、内部光点分布不均匀()肝切面内呈龟背样回声()肝切面内见包膜完整、壁薄光滑的圆形液暗区()肝切面内见包膜粗糙、壁厚不光滑、内部呈低回声或液暗区之病变回声区，伴局部压痛明显() ["A．肝血管瘤","B．肝癌","C．肝囊肿","D．肝脓疡","E．血吸虫病性肝纤维化"]
慢性胰腺炎()胰头癌()胆总管下段梗阻()肝总管梗阻() ["A．胰管串珠状扩大","B．胰管均匀性增大","C．胰管不扩大而胆总管、胆囊及肝内胆管扩大","D．胆总管及胆囊显示不清，而左、右肝内胆管扩大","E．胆囊肿大"]
发生肾的任何部位的圆形、壁光滑的、内为液暗区与后壁回声增强()肾窦内见大小不等互相连通的液暗区() ["A．肾孤立性囊肿","B．多囊肾","C．肾积水","D．肾肿瘤坏死液化","E．肾乳头状囊腺瘤"]
以下哪项不会引起肝脏上移() ["A．结肠极度扩大","B．腹水","C．腹部肿瘤","D．膈下脓肿","E．肠梗阻"]
什么情况下可获得最大的多普勒频移() ["A．当声束以锐角入射到血管上时","B．当声束以垂直方向入射到血管上时","C．当声束与血管平行入射时","D．声束对多普勒无影响","E．声束角越大频移越大"]
轴向分辨力()横向分辨力()周期()波长()动态范围()
