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1·Objective In order to improve diagnosis of the disease, ct appearances of pulmonary sequestration were studied.

目的探讨肺膈离症的CT表现，以提高诊断正确率。

2·CT revealed a soft tissue mass or nodule (12 cases), cyst lesion (9 cases), with emphysema around the pulmonary sequestration.

CT示软组织密度肿块或结节12例，囊肿样病变9例，病灶周围肺气肿。

3·Objective To evaluate the feasibility of contrast enhanced three-dimensional (3d) magnetic resonance angiography (MRA) in identifying the systemic blood supply in pulmonary sequestration.

目的评价对比剂动态增强三维(3d)磁共振血管成像(MRA)技术识别异常体循环动脉，诊断肺隔离症的方法与价值。