A.視神經(jīng)孔--Rhees’s B.巖骨半軸位--Towne’s C.瓦氏位--Water’s D.柯氏位--Caldweell’s E.許氏位--Stenever’s
A.2~3HU B.2~7HU C.7~12HU D.12~18HU E.19~30HU
A.50~100ml B.100~200ml C.300~500ml D.800~1000ml E.500~1500ml