儿童CT仿真内镜成像技术  

The method and technique of CT virtual endoscopy in children

作　　者：李涛[1] 邵剑波[1] 

机构地区：[1]武汉市儿童医院CT,MRI科,武汉430016

出　　处：《放射学实践》2003年第7期532-534,共3页Radiologic Practice

摘　　要：目的 :探讨儿童仿真内镜 (CTVE)的成像技术及技巧。方法 :采用GE公司Hispeed螺旋CT扫描机及同机工作站 (AdvantageWindow 2 .5 ) ,层厚 3～ 5mm ,螺距 1.0 ,重建间隔 1.5～ 2 .5mm ,应用软件Navigatorsmooth功能对 77例儿童不同病变包括气管内异物及结肠息肉、上颌窦粘膜下囊肿等常见疾病行仿真内镜成像。结果 :通过选择不同的观察方位、角度 ,特别是阈值的正确选择 ,所有病例均获得满意的CTVE图像 ,且全部经手术及病理证实。结论 :高质量的儿童CTVE图像依赖于扫描重建参数的合理选择、最佳的观察阈值及方位的选择 ,以及操作者的技巧和熟练程度。Objective:To evaluate the practical method and skill of CT virtual endoscopy(CTVE) in children. Methods :77 children with various diseases including tracheobronchial foreign body,colonic polyps,submucous cyst in the maxillary sinus etc.were performed CTVE at GE Hispeed CT scanner.The scanning parameters were 3～5mm of slice thickness at pitch of 1.0,and 1.5～2.5mm reconstruction interval using navigator smooth function.Results:satisfactory CTVE images were obtained in all cases by selection of different views,orientation and adequate threshold values.The findings of CTVE in all cases consisted with surgery or pathology.Conclusion:A superior CTVE image depends on optimal selection of the scanning reconstruction parameters,display setting and threshold values,as well as the operator′s experience and skills.

关 键 词：儿童 CT仿真内镜 医学影像学 参数 

分 类 号：R814.3[医药卫生—影像医学与核医学]