多层螺旋CT 对儿童气管、支气管异物的诊断价值

目的探讨多层螺旋CT在儿童气管、支气管异物诊断中的价值。方法对临床疑诊为气管、支气管异物20例患者行多层螺旋CT检查,原始图像重建采用多平面重建(MPR)、CT仿真支气管镜(CTVB)、表面遮盖显示(SSD)、最小密度投影(MinIP)和容积再现(VR)技术。结果共检出异物20例,其中1例位于气管,19例位于支气管。异物中瓜子、花生米碎片18例;小虾及塑料管各1例。全部病例均经纤维支气管镜或临床证实。后处理图像清晰显示了异物的位置、形态和异物与支气管黏膜的关系等。结论多层螺旋CT是一种很有价值的无创性诊断气管、支气管异物的检查方法。

Multi -slice Spiral CT in Diagnosis of the Foreign Body of Trachea or Bronchus in Children

Objective To evaluate the clinical application of multi-slice spiral CT(MSCT)for foreign body of trachea or bronchus in children.Methods Twenty cases suspected foreign body were examined with MSCT.The post-processing reconstruction included multiple planar reconstruction(MPR),CT virtual bronchoscopy(CTVB),shaded surface display(SSD),minimum intensity projection(MinIP),and volume rendering(VR).Results The foreign bodies located at trachea in 1 case and at bronchia in 19 cases.The foreign bodies included 18 fragments of peanut and melon seeds,one shrimp and one plastic-tube.All cases were confirmed by fiberoptic bronchoscopy or course of diseases.The position and form of foreign bodies,as well as the relationship between foreign bodies and bronchial muous membrane could be showed by MPR,CTVB,SSD,MinIP and VR.Conclusion MSCT scanning is a significant noninvasive and sensitive diagnostic technique in detecting the foreign body in trachea or bronchus.