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目的 :为开展经鼻蝶窦鞍区手术及功能性鼻窦内窥镜手术提供蝶窦的影像解剖学基础。方法 :取 5 0具成人头颅标本 ,行冠状位、矢状位及水平位薄层CT扫描。观测蝶窦气化发育的情况 ,根据蝶窦向蝶骨体、蝶骨小翼及鞍背气化的程度进行分型分度。结果 :10 0侧蝶窦中属甲介型为 4% ,鞍前型为18% ,半鞍型为 18% ,全鞍型为 14 % ,鞍枕型为 46 % ;另外测得蝶窦的最大左右径的平均值 :左 18.5mm ,右17.6mm ;最大前后径的平均值 :左 2 2 .2mm ,右 2 0 .8mm ;最大上下径的平均值 :左 2 1.0mm ,右 2 0 .4mm。从正中线至蝶窦外侧壁的平均距离左 14 .8mm ,右 15 .2mm。结论 :冠状位以及水平位CT扫描能清晰显示两侧蝶窦腔气化发育的情况 ,气化程度不同的蝶窦在选择手术进路时有着极其重要的指导意义
OBJECTIVE: To provide the anatomical basis of sphenoid sinus for the transsphenoidal sinus surgery and functional endoscopic sinus surgery. Methods: Fifty adult skull specimens were taken and scanned by coronal, sagittal and horizontal thin-section CT scans. Observed the development of sphenoid sinus gasification, according to sphenoid sinus, sphenoid wing and saddle gasification of the degree of sub-sub-degree. Results: In the side sphenoid sinus of 10 0, the serotypes were 4%, the saddle type was 18%, the semirellar type was 18%, the full saddle type was 14% and the saddle type was 46%. In addition, The average diameter of the largest left and right: left 18.5mm, right 17.6mm; maximum average diameter before and after: left 2 2 .2 mm, right 2 0 .8 mm; maximum average diameter of the upper and lower: left 2 1.0mm, right 20. 4mm. The average distance from the midline to the lateral sphenoid sinus is 14.8 mm left and 15.2 mm right. Conclusions: Coronal and horizontal CT scans can clearly show the development of gastrulation on both sides of the sphenoid sinus. The sphenoid sinus with different gasification degree plays an extremely important guiding role in the selection of the surgical approach