肺动脉吊带畸形的 M SCT 表现及其应用价值

摘要

目的：评价MSCT及后处理（MIP、MinIP、MPR、VRT）在肺动脉吊带畸形（PAS）诊断中的应用价值。方法回顾性分析22例在我院及合作医院住院并经手术证实的肺动脉吊带畸形的临床表现及 MSCT 特征表现。结果本组22例全部为左肺动脉起源于右肺动脉远端的肺动脉吊带畸形，左肺动脉呈“C 形”走行绕过气管后方进入左肺，其中4例出现右肺发育不良，5例出现左肺阻塞性肺气肿，8例出现气管分叉呈“倒 T”形，22例气管或支气管均出现不同程度的狭窄。结论 MSCT 及其后处理技术相互结合对肺动脉吊带畸形的准确诊断及术前评估具有重要意义。%Objective To evaluate the value of MSCT and postprocessing technique (MIP ,MinIP ,MPR ,VRT ) in the diagnosis of pulmonary artery sling (DAS) .Methods MSCT characteristics findings and clinical manifestation of 22 cases with surgically and histologically proved pulmonary artery sling in affiliated hospitals of Wenzhou Medical University were retrospectively analyzed .Results All 22 cases of PAS enhanced MSCT imaging showed the left pulmonary artery origina‐ted from right pulmonary artery ,and the left pulmonary artery was “C” shape bypassed to the left hilar from the back top of carina .4 cases of all were found right lung hypoplasia .5 cases had left obstructive pulmonary emphysema .8 cases in‐cluding tracheal bifurcation was “Inverted T " Shape .All 22 children had varying degrees of tracheobronchial stenosis . Conclusion The combination of MSCT and postprocessing technique can be used to make definite diagnosis of PAS ,which can also provide useful information for preoperative assessment of PAS .