CT扫描对前筛窦及其毗邻结构的研究

将40具完整成人尸头进行冠状位及横断位CT扫描，其中部分尸头还运用横断位CT扫描重建矢状位CT扫描，对前筛窦及其毗邻结构进行观察。结果示：根据CT扫描，可将前筛窦气房分为4组：即漏斗前筛房（出现率87．5％）、漏斗外气房（出现率82．7％）、漏斗后气房（出现率86．3％）、筛泡筛房（出现率100．0％）；同时又可将前筛窦分为筛内型（出现率71．2％）和筛外型（出现率28．8％）。表明CT扫描能充分显示前筛窦气房的气化变异及其邻近结构的影像学特征。这对于提高鼻内窥镜手术的疗效，减少严重并发症的发生，具有重要的指导意义。

Computed tomography of the anterior ethmoid sinuses and its adjacent structures for endoscopic sinus surgery

Forty adult cadavers were examined by computed tomography(CT) imaging with special attention to the pneumatization of the anterior ethmoid sinus for endscopic sinus surgery.The study of the specimen was done using coronal section and axial section,sagittal reconstructed images were obtained from the data acquired in the axial plane. The cells of anterior ethmoid sinus were classified into four sub-groups,namely, the pre-infundibular cell (appearance rate 87. 5 % ),the lateral infundibular cell (82. 7 % ),the post-infundibular cell (86. 3%) and the bulla cell (100. 0% ),and the anterior ethmoid sinus was classified into two types, namely, intraethmoid type (71. 2 %)and extraethmoid type(28. 8% ). The result shows that CT can display the sub-group and the type of the anterior ethmoid sinus and its adjacent structures clearly. The significance of endoscopic si nus surgery was discussed.