下列情况,哪些必须加做脊柱、脊髓的冠状面扫描()
A.鉴别髓内髓外病变时
B.增强扫描时
C.脊髓空洞症时
D.“S”形脊柱侧弯时
E.A+B+D
参考答案:E
He is English now. [ ]
A. learn
B.learnt
C.learning
骨折血肿机化演进期一般需要()
A.3天
B.5天
C.1周
D.2周
E.3周