螺旋CT仿真内镜临床应用探讨

目的：探讨CT仿真内镜（CTVE）成像技术的临床应用价值。方法：用螺旋CT对53例检者行容积扫描，包5拓鼻腔及鼻旁窦13例，喉部4例，气管和支气管20例，胃和结肠16例。利用Navigator软件对容积扫描数据进行三维重建，获得仿真内镜的影像，应用Fly through软件沿管腔中轴方向推进观察。全部病例（正常者除外）均经纤维内镜或手术病理证实。结果：鼻腔及鼻旁窦、喉部、气管、支气管及胃、肠腔CT仿真内镜获得类似于纤维内镜显示空腔器官腔壁或腔内病变形态的效果，并能从梗阻远端观察病变情况。结论：CT仿真内镜提供了一种无创伤性的诊断方法，可作为纤维内镜的补充手段，具有良好的应用前景。

A preliminary study of spiral CT virtual endoscopic imaging

Objective:To investigate the clinical application of spiral CT virtual endoscopy.Methods:Spiral CT volume scanning was performed in 53 cases,including 13 cases of nasal cavity and paranasal sinus,4 of larynx,20 of trachea and bronchi,16 of stomach and colon.The source data of 53 patients were transported to a workstation,by which 3 D reconstructions were performed with a software named Navigator and CTVE was generated.The CTVE images were observed along the axis of cavity using the software Fly through.All the cases confirmed by fiberoptic endoscopy or surgical findings except the normal.Results:The imaging findings of CTVE of nasal cavity and paranasal sinus,larynx,trachea and bronchi,stomach and colon were similar to the results of fiberoptic endoscopy.Additionally,the lesions could be evaluated by CTVE from the distal site of the obstruction.Conclusion:CTVE can provide a noninvasive diagnostic method to serve as a supplement to fiberoptic endoscopy.