肺部疾病CT仿真支气管内镜的表现及成像技术探讨  

The Manifestations of Pulmonary Diseases on CT Virtual Bronchoscopyand Study of Image-forming Techniques

作　　者：苑静波[1] 陈刚[2] 啜振华[1] 刘荣欣[1] 马玲[2] 王秀忠[1] 葛路岩[1] 

机构地区：[1]石家庄铁路中心医院影像科,河北石家庄050011 [2]石家庄铁路中心医院呼吸内科,河北石家庄050011

出　　处：《实用放射学杂志》2002年第7期557-560,共4页Journal of Practical Radiology

摘　　要：目的　观察常见肺部疾患的CT仿真支气管镜征象 ,探讨有关成像技术。方法　选择因肺部疾患接受胸部CT检查的 5 7例患者行螺旋CT薄层扫描 ,将重建后的图像源容积数据传输至同机工作站 ,应用机内图像分析软件选择适当成像方式及阈值模式最终获取仿真支气管内窥镜图像资料。病例均经纤维支气管镜、穿刺活检、手术或临床综合诊断。结果　肺癌 2 3例 ,肺结核 8例 ,肺癌切除术后 6例 ,肺部感染及放射性肺炎 16例 ,支气管扩张症 4例。CTVB显示气管、支气管各种病理征象共 81处 ,与纤支镜对照其敏感性为 82 %。结论　通过仿真支气管内窥镜成像可清晰地显示多种肺部疾患所造成的气管、支气管腔内病理征象 ;合理选择成像阈值 ,优化扫描及重建参数可明显改善图像质量 。Objective To investigate the manifestations of commnly-encountered pulmonary diseases on CT virtual bronchoscopy(CTVB)and to study relevant image-forming techniques.Methods Fifty-seven patients with pulmonary diseases were examined with thin-slice helical CT scanning.After reconstructed,the initial volumetric imaging data was transferred to the workstation(GE Advantage Windows 3.1)and the CTVB images were acquired by using imaging analytic soft-ware and selecting suitable imaging mode and threshold values.The imaging findings were compared with the results obtained with fiberoptic bronchoscopy,needle biopsy,operation and complex clinical diagnosis.Results Among the 57 cases,pulmonary carcinoma was confirmed in 23 patients (including central type 15,peripheral type 6 and metastatic type 2);pulmonary tuberculosis in 8;pulmonary carcinoma after operation in 6;pulmonary inflammation caused by infection and irradiation in 16;bronchiectasis in 4.Altogether 81 sites of varied pathologic signs in tracheobronchial cavity were confirmed with CTVB.The sensitity was 82% compared with fiberoptic bronchoscope.Conclusion Many tracheobronchial alterations resulting from varied pulmonary diseases may be displayed quite clearly with CTVB.In order to improve imaging quality and diagnostic accuracy it is necessary to select suitable CT threshold values and adopt appropriate scanning and reconstructing parameters as well.

关 键 词：肺部疾病 CT仿真支气管内镜 成像技术 诊断 

分 类 号：R563[医药卫生—呼吸系统] R814.42[医药卫生—内科学]