肺段隔离症的MSCT及CTA评价

Evaluation of MSCT and CT angiography for diagnosing pulmonary sequestration

目的:探讨64层螺旋CT及CT血管成像技术在隔离肺诊断中的价值。方法:回顾性分析7例经手术病理证实的肺段隔离症患者的胸部CT图像及最大密度投影、多平面重组、容积再现等多种后处理图像特征。结果:7例均为肺叶内型,2例位于左下肺,5例位于右下肺;血管重建7例均显示供血动脉来自主动脉,并清楚显示其起源、走行、分支和分布。结论:多层螺旋CT血管成像及其后处理重建技术能明确显示肺段隔离症的异常供血动脉,为临床提供有效的术前评价。

Objective:To assess the value of MSCT and CTA in diagnosing pulmonary sequestration.Methods:CT images of seven patients with pathologically confirmed pulmonary sequestration were analyzed retrospectively.All patients underwent MSCT contrasts scanning.The post-processed images of volume rendering,maximum intensity projection,and multi-planar reconstruction were analyzed retrospectively.Results:All patients were diagnosed correctly.Lesions were located in the posterior basa lsegment or interior basal segment of the lower lobe and characteristic abnormall supplying artery could be seen in al1 7 cases(from descending aorta).Reconstructed images displayed the origin,courser,branches and distribution of lesions clearly.Conclusion:Mluti-slice spiral CT is an ideal noninvasive and effective modality for diagnosing pulmonary sequestration and postprocessing techniques can provide more useful information for evaluation and making preoperative planning.