单选题

对瓦特(Water位)影像标准的判断,哪一项是正确的( )

A岩骨应投影于上颌窦的下缘

B岩骨上缘影于眼眶中

C岩骨上缘投影于上颌窦下缘

D岩骨上缘投影于上颌窦下缘下1cm

E岩骨上缘投于上齿槽

正确答案

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