Objective To study the DR and CT examination in the application of closed chest trauma. Methods 85 cases were examined by DR and CT respectively, and the results of two methods were compared. Results The positive rate of CT examination in the diagnosis of mediastinal hematoma, pleural effusion, pneumothorax, lung injury, pulmonary, and pulmonary contusion was higher than that of DR, P<0.05. CT examination showed no significant difference in the diagnosis of rib fracture, subcutaneous mediastinal pneumothorax and other aspects of the positive and DR examination, P>0.05. Conclusion The diagnostic accuracy of DR is higher than that of CT, and DR is more convenient in the early screening of thoracic trauma, and it should be combined with the two methods in order to improve the accuracy of diagnosis.%目的：探讨DR与CT检查在闭合性胸部创伤中的应用效果。方法85例患者分别予以DR与CT检查，对比两种方式的检查结果。结果 CT检查对纵膈血肿、胸腔积液、气胸、肺撕裂伤、肺不张、肺挫伤等诊断的阳性率均高于DR检查，差异均具有统计学意义（P＜0.05）。CT检查对于肋骨骨折、皮下纵膈气胸等方面的诊断阳性与DR检查相比，差异无统计学意义（P＞0.05）。结论 CT的诊断准确率高于DR，而DR在胸部创伤的早期筛查中更加方便，应将两种检查方式结合，以提高诊断的准确性。
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