摘要
目的探讨视神经管与不同类型蝶窦和后组筛窦毗邻关系,为鼻内镜手术安全实施提供可靠依据。方法搜集260例成人鼻窦MSCT资料,利用MPR技术,从横断、冠状和矢状面对520侧视神经管与蝶窦和后筛窦的解剖关系进行连续、动态观察。所有数据间比较应用χ^2检验。结果蝶上筛房发生率41.9%(218侧),前床突气化发生率12.3%(64侧)。视神经管分级中0级4.4%(23侧)、1级19.2%(100侧)、2级26.0%(135侧)、3级29.0%(151侧)、4级21.4%(111侧)。视神经管呈蝶旁型46.5%(242侧)、筛旁型26.7%(139侧)、筛蝶型22.3%(116侧);蝶上筛房形成者中,3、4级视神经管及筛旁型、筛蝶型视神经管发生率较蝶前筛房者均明显提高(χ^2值分别为117.4、201.2,P值均〈0.01)。前床突气化者89.1%(57/64)为4级视神经管,10.9%(7/64)为3级。结论鼻窦MSCT容积扫描、结合MPR技术多方位连续、动态观察可准确显示视神经管与周围结构立体关系,为鼻内镜手术安全实施提供可靠依据。
Objective To explore the relationship between the posterior ethmoid sinuses, the sphenoid sinus and the optic canal. Methods Two hundred and sixty (520 sides ) sinus CT scans were reviewed. The images were transferred to work station for MPR analysis. All data were analyzed by X2 test. Results The prevalence of type 0 to 4 CNII was 4. 4% (23 sides), 19. 2% ( 100 sides), 26. 0% ( 135 sides), 29. 0% ( 151 sides), 21.4% ( 111 sides) ,respectively; The prevalence of onodi cell was 41.9% (218 sides) ; the pneumatization of anterior clinoid process was 12. 3% (64 sides) ; The prevalence of type parasphenoid, paraethmoid and ethmoid-sphenoid CNII was 46. 5% (242 sides), 26. 7% (139 sides) ,22. 3% ( 116 sides), respectively. Among the onodi cell, The prevalence of type 3 and 4 optic canal and paraethmoid and ethmoid- sphenoid optic canal was more than the preceding sphenoid ethmoid cell significantly. Conchlsions MPR and multi-slice spiral CT can facilitate precise study of the anatomical relationship of CNII. Caution must be taken during sinonasal surgery to minimize the risk of inadvertent CNII injury.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2009年第9期965-968,共4页
Chinese Journal of Radiology
关键词
视神经
筛窦
蝶窦
体层摄影术
X线计算机
Optic nerve
Ethmoid sinus
Sphenoid sinus
Tomography, X-ray computed