肺隔离症的CT诊断价值

The evaluation of CT diagnostic value for pulmonary sequestration

目的 探讨CT对肺隔离症的诊断价值。方法 回顾性分析自1995-2002年间本院收治并经胸外科手术与病理和/或CT血管造影(computed tomography angiography CTA)、三维重建、最大密度投影成像(3D、MIP)证实的肺隔离症25例,分析其CT平扫、增强、CTA及3D、MIP的诊断正确率。 结果 25例中发生于左肺下叶者19例,占76％;右肺下叶者6例,占24％;均为肺叶内型。25例共行CT扫描30次,其中单纯平扫14次,单纯增强10次,平扫+增强+CTA、3D、MIP重建6次。诊断正确率分别为7.14％、70％、和100％。 结论 CT检查,尤其是CT增强、CTA、3D.MIP重建是肺隔离症术前正确诊断最有价值的诊断方法之一。

Purpose To evaluate the CT diagnostic value for pulmonary sequestration. Methods The pulmonary sequestration of 25 cases were reviewed restrospectively confirmed by surgery and pathology and computed tomography angiography ( CTA ) .The correctly diagnosed rate of plain CT scanning, enhance, CTA and 3D maximum intensity projection(MIP) reforming by analyze. Resultes Lesions were found predominantly in the left lower lobe 19 cases (76%),right lower lobe 6 cases (24%),A11 the cases were intralobular type. Plain CT scanning (14),enhance (10), plain + enhance + CTA and 3D、MIP reforming (6) in CT scanning (30). The correctly diagnosed rate were plain CT 7.14%, enhance 70%, plain + enhance + CTA and 3D、MIP reforming 100%. Conclusion CT scanning were pulmonary sequestration correctly diagnose at before operation best value methods of one especially enhance + CTA and 3D、 MIP reforming.