多发性硬化的CT表现不包括下列哪项() ["A．脑室旁白质内低密度灶","B．病灶多发","C．病灶多变","D．部分病灶可以强化","E．占位效应明显"]
转移瘤的最佳CT扫描程序() ["A．横断平扫","B．冠状平扫","C．高分辨力扫描","D．平扫和增强扫描","E．用骨算法"]
与颅咽管瘤特点不符的是() ["A．为常见的鞍上肿瘤","B．好发于儿童","C．好发于40～60岁患者","D．密度常较均匀","E．肿瘤边界清楚"]
简述颈动脉体瘤在DSA检查中的特征性改变。
单纯性糖尿病性视网膜病变(DRP)硬性渗出位于() ["A．外丛状层","B．内核层","C．外核层","D．内丛状层和内核层之间","E．外丛状层和内核层之间"]
简述甲状舌管囊肿的B超声像图特征。
