16层螺旋CT仿真支气管镜与纤维支气管镜对照研究  

Correlative Study of CT Virtual Bronchoscopy with Fiberoptic Bronchoscopy

作　　者：涂建华 姚振威[2] 沈天真[2] 冯晓源[2] 陈小东[3] 

机构地区：[1]东莞中医院放射科,523000 [2]复旦大学附属华山医院放射科 [3]复旦大学附属华山医院呼吸科

出　　处：《中国医学计算机成像杂志》2004年第3期160-165,共6页Chinese Computed Medical Imaging

摘　　要：目的通过16层螺旋CT仿真支气管镜与纤维支气管镜对照分析,探讨CT仿真支气管镜的临床应用前景。材料和方法50例正常人群和20例中央型肺癌或主气道炎患者,所有研究对象均接受16层螺旋CT扫描。扫描条件120kV/250mAs,准直宽20mm,螺距为11,扫描方式为16层容积扫描,重建层厚为1.25mm.扫描范围自肺尖至肺底,患者一次屏气完成扫描。其横断面图像转入SUN工作站(ADW4.0)进行三维重建,选用Navigation程序进行仿真支气管镜的研究。结果16层螺旋CT仿真支气管镜可清晰地显示至第4级亚段支气管内腔,与纤维支气管镜完全吻合。与纤维支气管镜比较,16层螺旋CT仿真支气管镜可100%地显示其表现为管腔闭塞者;对于纤维支气管镜表现为恶性狭窄者,CT仿真支气管镜主要表现为支气管闭塞;而纤维支气管镜表现为乳头或菜花样占位者,16层螺旋CT仿真支气管镜仅20%左右显示为腔内占位。结论16层螺旋CT仿真支气管镜可良好地显示至亚段一级支气管管腔;但其显示气道腔内占位的分辨率不及纤维支气管镜。临床应用上,16层螺旋CT仿真支气管镜是对纤维支气管镜的重要补充。Purpose:To evaluate the clinical promising of CT virtual bronchoscopy(CT VB)through comparsion of CT VB with fiberoptic bronchoscopy.Materials and Methods:50cases of normal group and20cases of central typed lung cancer or inflamation of central airway were analyzed.All the objects got16-row spiral CT(lightspeed ultra16,GE corporation)examination with20mm collimit thickness,120kV/250mAs scan,pitch1:1,reconstruction slice thickness was1.25mm.The cross-section images were transmitted to the SUN(ADW4.0)workstation.Selecting navigation package to do virtual bronchoscopy.Results:16-row spiral CT VB could reveal trachea and bronchus clearly to the forth segmental level on normal group.Compared with fiberoptic bronchoscopy,16-row spiral CT VB could completely reveal the occluˉsion which the fiberoptic bronchoscopy showed obstruction or malignant stenosis,but it revealed occuˉpying mass only20%of which fiberoptic bronchoscopy showed nipple or cauliflower lesions.Concluˉsion:CT VB can reveal normal trachea and bronchus to sub-segmental level.The space resolution of CT VB is significantaly lower than that of fiberoptic bronchoscopy.CT VB can only be complement to fiberoptic bronchoscopy in clinical use.

关 键 词：16层螺旋CT 纤维支气管镜 CTVB 肺移植 支气管形态 

分 类 号：R816.4[医药卫生—放射医学]