【摘要】 目的 :探讨肺栓塞的 CT表现及演变过程 ,提高对肺栓塞的认识。方法 :采用薄层 CT扫描 ,对实验性兔肺栓塞进行不同时间间隔的影像学观察 ,并与病理进行对照分析。结果 :随栓塞时间的延长 ,肺野内可观察到局限性透过度增高 ,片状炎症样阴影、胸膜牵拉及胸腔积液等一系列影像学改变。肺栓塞早期局限性透过度增高区域 CT值与正常区域相比较呈下降趋势 ,并具统计学意义(P<0 .0 5)。结论 :本研究为 CT扫描应用于临床诊断肺栓塞以及为肺栓塞的动态 CT观察提供了理论依据更多还原

【Abstract】 Objective:To detect CT manifestations and its development in pulmonary embolism,and to deepen the understanding of pulmonary embolism. Methods:Imageological and pathological changes of experimental pulmonary embolism in rabbits were observed at different interval.Results:Authors observed limited areas of decreased lung attenuation,inflammatory shadows,pleura drags and pleura effusion.In early pulmonary embolism,CT values dropped,compared limited areas of decreased lung attenuations with normal locations.The difference was statistically significant.Conclusion:The study provided some theory for diagnosis and dynamic analysis of pulmonary embolism in clinic.更多还原