目的 探讨粉尘爆炸患者早期胸片表现。方法 回顾性分析我院收治的粉尘爆炸患者入院1～4天的床旁CR胸片表现， 影像分析内容包括肺部病变的分布、形状、大小、边缘；肺门的改变；有无胸腔积液；有无胸腔积气；有无肋骨骨 折；心影大小的变化。结果 本组19例患者的床旁X线胸片中有11例主要表现为肺纹理增多、增粗、边缘模糊，11中 有2例伴有沿肺纹理分布的小斑点影。19例患者中有8例胸片表现为不同程度的肺内散在分布斑片影，边缘模糊不 清；其中有2例合并肺门影增大，4例合并胸腔积液。结论 粉尘爆炸后早期胸部影像表现主要以肺吸入性损伤为主 或伴有胸部的爆震伤表现。

Objective To explore the findings of X-ray chest film of dust explosion in 1-4 days. Methods The bedside X-ray films in 1-4 days of 19 cases of dust explosion were retrospectively analyzed. The image features included the location, shape, size, edge of lesion, the shape of the hilum of lung, the presence of pleural effusion and pheumatosis, the presence of fractured rib; the shape of heart. Results On bedside chest film, the increased lung marking were found in 11 cases, in which 2 cases accompanied the spot along the lung marking. The diffused patch were found in 8 cases, in which 2 cases accompanied the hilum pulmonis increment, 4 cases accompanied pleural effusion. Conclusion The dust explosion showed a appearance of pulmonary aspiration injury (the increased lung marking) and/or accompanied blast injury (the diffused patch, the hilum pulmonis increment, pleural effusion) on the chest film in 1-4 days.