ABSTRACT
Objective To investigate CT findings and diagnosis,follow-up value in the chest closed pulmonary contusion.Methods The clinical and imaging data of 56 patients with pulmonary contusion were retrospectively analyzed.Results 23caseswithX-raycheck,18caseswerefoundpulmonarycontusion,and five cases were negative.CT found 56 cases of pulmonary contusion involving 13 cases of the right lung,8 cases of the left lung,35 cases of both lungs involved,a total of 135 lung lobes involvement.CT performance can be divided into three types,interstitial pulmonary contusion in 13 cases(23.2％),the substance of the pulmonary contusion in 31 cases(55.4％),the mixed pulmonary contusion in 12 patients (21.4％).After treatment,interstitial pulmonary contusion lesions were completely absorbed after 1 ～ 3 days,lesions began to absorb in the substance and mixed pulmonary contusion after 1 week and absorbed completely 3 weeks after treatment.Six cases left over from fibrosis lesions and pleural adhesions hypertrophic changes.Conclusion CT is helpful for early diagnosis of pulmonary contusion,it is the best imaging method in understanding its severity and dynamic track review of pulmonary contusion,the CT classification has important guiding value in clinical conditions and duration judgment.