Abstract: ObjectiveTo explore the clinical application of 64－MS CT to acute pulmonary contusion. MethodsA retrospective study was undertaken in 461 cases who were doubted acute pulmonary clinically. They were received CT scan within one hour. Results113 cases were diagnosed acute pulmonay contusion including 12 cases with wide－bound pulmonary contusion in pulmones, 61 cases with right lung, 40 cases with left lung, 22 cases with pulmonary atelectasis, 33 cases with aeropleura, 10 cases with hemopneumothorax, 38 cases with fracture of rib, 4 cases with fracture of clavicle, 2 cases with fracture of shoulder blade, 2 cases with thoracic vertebral fracture, 1 case with fracture of sternum, 87 cases with pneumoderma, 11 cases with mediastinal emphesema and 3 cases with mediastinal hematoma. Conclusion64－MSCT can effectively diagnose acute pulmonary contusion, especially in diagnosing the larvaceous imaging signs.

Key words: acute pulmonary contusion, 64 multi－slice CT, aeropleura, fracture64