额隐窝的CT检查

目的:利用高速螺旋CT三维重建检查额隐窝,为鼻内镜额窦开放术提供术前参考。方法:利用16排高速螺旋CT对51例(102侧)临床资料进行额隐窝的三维重建,其中包括58侧慢性额窦炎,44侧非鼻窦炎。对钩突附着方式和鼻丘、筛泡进行辨认和统计,测量额隐窝相关参数,再分别统计和比较慢性鼻窦炎组和非鼻窦炎组的各项数据。结果:对51例(102侧)鼻窦的CT三维重建均可辨认出额窦、额窦内口及额隐窝,额隐窝的形态个人差异极大。慢性鼻窦炎组与非鼻窦炎组比较,鼻丘气房矢状位最大内径、额窦内口直径间的差异有统计学意义,而额窦内口与前鼻棘间连线的距离、连线与鼻底平面间的夹角、筛泡前壁与前鼻棘间连线距离、连线与鼻底平面间的夹角间差异无统计学意义。结论:钩突、鼻丘不同的形态和大小对额隐窝的形态产生决定性影响。鼻丘气房发生率高,位置恒定,可作为开放额隐窝的解剖标志。额窦内口位置恒定。鼻内镜手术时,以前鼻棘为起点,与鼻底平面成夹角50～60°、以半径100mm左右的扇形区域为手术的相对安全界,绝大多数患者可在此界限内找到并开放鼻丘气房、开放筛泡气房、扩大额窦内口。

CT scan of frontal recess

Objective:To make 3-D reconstruction of frontal recess by high speed spiral CT,which can be helpful to nasal endoscopic frontal sinus operation.Method:Fifty-one cases(102 laterals) of frontal recess 3-D reconstruction by 16 line high speed spiral CT were enrolled in the resezrch,which included 58 laterals with chronic frontal sinusitis and 44 laterals of normal nasal sinus.The structure of frontal recess,the agger nasi and the adhere style of uncinate process were recognized.The parameter of frontal recess ...