Objective To explore the significance of ethmoidal artery in operation of ethmoidal sinus.
目的探讨筛动脉在筛窦手术中的意义。
Objective to provide the anatomic data for the decompression of optic canal through ethmoidal sinus.
目的为经筛窦行视神经管减压等手术的开展提供解剖学依据。
Objective To explore the clinical significance of infraorbital recess in operation of ethmoidal sinus.
目的探讨眶下隐窝在筛窦手术中的意义。
Conclusion the variation of infraorbital recess was found frequently, the recess must be paid attention to in operation of ethmoidal sinus.
结论眶下隐窝变异较大，深浅不一，筛窦手术中应注意正确处理该隐窝。
Contrast clearly demonstrates the extent of the lesion within the nasal cavity and invasion of the ethmoidal sinus and anterior cranial fossa (red arrow in Figure 4).
增强扫描清楚的显示病变在鼻腔内的延伸并且侵犯蝶窦和前颅窝（图4，红箭）。
Figure 2: T2-weighted axial image once again demonstrates a large, heterogeneous lesion located in the ethmoidal sinus (arrow). The lesion is predominately isointense to grey matter.
图2：T2序列轴位影像再次显示一个大的不均匀病变，位于筛窦（箭头）。病变的信号类似于灰质。
Conclusion: ct is able to screen the anatomy and the variations of spheno-ethmoidal region related to function endoscopic sinus surgery. This is a good guide to the surgery.
结论：CT扫描能显示蝶筛区域与功能性内窥镜鼻窦外科手术有关的绝大部分解剖结构及其变异，对手术有很大的指导作用。
Purpose: To evaluate the CT findings of spheno-ethmoidal region related to functional endoscopic sinus surgery.
目的：探讨CT对蝶筛区域解剖结构的评价能力，以期为功能性内窥镜鼻窦外科手术提供帮助。
Purpose: To evaluate the CT findings of spheno-ethmoidal region related to functional endoscopic sinus surgery.
目的：探讨CT对蝶筛区域解剖结构的评价能力，以期为功能性内窥镜鼻窦外科手术提供帮助。
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