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抵达颅中线深部结构技术上是困难的,作者提出从腭部径路法,指出它比鼻腔或从上颌窦筛窦径路法有下述优点:1.暴露野较宽,经鼻腔达蝶窦距离为7.5cm,鼻宽为2.6cm,故视角仅为
It is technically difficult to arrive at the deep cranial line structure. The authors suggest that it has the following advantages over the nasal passages or from the maxillary sinus ethmoidal sinus approach: 1. The exposed field is wider and the distance from the nasal cavity to the sphenoid sinus is 7.5cm, nose width of 2.6cm, so the view is only