运用介入栓塞技术建立一种能用于影像学诊断的猪急性亚段肺动脉栓塞模型，并评价其技术上的可行性和准确性；2。
To establish a porcine model of acute subsegmental pulmonary embolism which is suitable to study imaging diagnosis and to evaluate the technique feasibility and stability; 2.
目的研究肺段和亚肺段支气管、肺动脉和肺静脉在冠状断面上的配布规律。
Objective to explore the anatomic characteristics of the bronchi, arteries, and veins of pulmonary segments on the coronal section.
结果27 例病人共发现肺动脉栓子146个，其中左及右肺动脉7个，肺叶动脉34 个，肺段动脉99 个，肺亚段动脉6 个。
Results A total of 146 pieces of emboli were found in 27 cases, among which 7 pulmonalis dextra arteria and 34 pulmonalis lobar arteria, 99 pulmonalis segmental arteria were found.
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