9个月患儿,呕吐、腹泻3天,尿量明显减少,呼吸38次/分,脉搏120次/分,烦躁不安,皮肤弹性较差,口唇粘膜干燥,四肢稍凉。血清钠138mmol/L,血钾4.1mmol/L。其脱水程度及性质考虑为() ["A.中度脱水,等渗性","B.轻度脱水,低渗性","C.轻度脱水,等渗性","D.中度脱水,低渗性","E.重度脱水,低渗性"]
鼻窦中成熟最早的是() ["A.上颌窦","B.额窦","C.前组筛窦","D.后组筛窦","E.蝶窦"]
简述交通性脑积水的CT表现?
血管母细胞瘤的CT表现有哪些?
下列诸项中哪项是错的() ["A.前鼻孔是由大翼软骨围成的","B.胚胎10周左右口腔和鼻腔境界已形成","C.克氏区位于鼻中隔前下方","D.乳幼儿时期鼻窦已发育良好","E.以上都是错"]
髓母细胞瘤的CT 诊断要点是什么?