论文部分内容阅读
目的 评价综合运用三维成像技术在诊断气管、支气管疾病中的作用。材料与方法 选择 5 3例叶支气管以上气道疾病患者行高档螺旋CT扫描 ,将容积扫描数据预处理后传至计算机工作站 ,分别用CT仿真支气管内镜 (CTVB) ,表面遮盖显示法(SSD) ,最大强度投影 (MIP) ,最小强度投影 (MinIP) ,多平面重构 (MPR)进行重建 ,分析影像学表现 ,4例与手术标本进行对照。结果 在轴位图像基础上 ,气管肿瘤在MPR、CTVB显示为好 ;中央型肺癌因生长方式不同而在三维图像中有不同的表现 ,观察肺癌术后支气管残端以CTVB最佳。结论 用一次扫描的数据行多种方式三维重建 ,弥补各自的局限性 ,能提高诊断的准确性 ,但轴位仍是诊断的主要依据
Objective To evaluate the role of integrated three-dimensional imaging in the diagnosis of tracheal and bronchial diseases. Materials and Methods 53 high-grade helical CT scans were performed in 53 patients with airway disease of the leaf and bronchus. The volume scan data were preprocessed and transmitted to the computer workstation. CT virtual bronchoscopy (CTVB), surface occlusion display (SSD) , Maximum intensity projection (MIP), minimum intensity projection (MinIP) and multiplanar reconstruction (MPR) were performed to analyze the imaging findings. Four cases were compared with the surgical specimens. Results On the basis of axial images, tracheal tumors showed good results in MPR and CTVB. Central lung cancer showed different manifestations in three-dimensional images due to different growth patterns. CTVB was the best for bronchial stump after lung cancer surgery. Conclusion The data of one scan can be used to reconstruct 3D images in various ways to make up for their respective limitations and improve the accuracy of diagnosis. However, axial location is still the main basis of diagnosis