多层螺旋CT多平面重组观察额隐窝区域气房的临床意义

目的 应用多层螺旋CT的多平面重组(MPR)技术观察额隐窝区域诸气房,为额窦开放术中准确判断额窦开口提供帮助.方法 选择100例无额窦和额隐窝区域病变的患者行头部螺旋CT扫描,应用MPR技术在横断面、冠状面和矢状面3个重组图像上连续观察额隐窝区域诸气房.结果 100例共200侧中,186侧(93.0%)可见鼻丘气房.88侧(44.0%)可见额气房,其中Ⅰ型占51侧(58.0%),Ⅱ型占23侧(26.1%),Ⅲ型占14侧(15.9%).130侧(65.0%)可见筛泡上气房.23侧(11.5%)可见额筛泡气房.11侧(5.5%)可见眶上筛房.36侧(18.0%)可见额窦间隔气房.结论 运用多层螺旋CT的MPR技术可以多方位连续观察额隐窝区域诸气房,加深对该区域诸气房的理解,为内镜额窦开放术提供有价值的影像信息.

Study of the cells of frontal recess region with multi-detector CT multiplanar reconstruction and clinicaI significance

Objective To observe the cells of frontal recess region with multi-detector CT muhiplanar reconstruction(MPR).Methods One hundred patients without the disease of frontal sinus and frontal recess region underwent axial multi-detector CT scan with axial,coronal and sagittal multiplanar reconstruction.Results In 100 cases(200 sides),the agger nasi cell is present in 186 sides(93.0%),the frontal cells were identified in 88 sides(44.0%),the prevalence of type Ⅰ,type Ⅱ,type Ⅲ and type Ⅳ cells were 51 sides(58.0%),23 sides(26.1%),14 sides(15.9%)and 0 sides,respectively. The suprabullar cells,the frontal bullar cells and the supraorbital ethmoid cells were identified in 130 sides (65.0%),23 sides(11.5%)and 11 sides(5.5%),respectively.The interfrontal septal cells were identified in 36 sides(18.0%).There was no significant difference between males and females,as well as between left and right side(P＞0.05).Conclusion With MPR imaging,doctors could better understand the frontal recess region,which is helpful to the endoscopic frontal sinus surgery.