急性间质性肺炎的影像诊断

目的：探讨急性间质性肺炎的影像特征。方法：回顾分析经开胸肺活检证实或临床综合诊断7例急性间质性肺炎的系列影像资料。结果：急性间质性肺炎的影像学早期主要表现为双侧中下肺的外周散在分布的实变阴影及磨玻璃阴影；中期上述病变迅速由肺的外周向中轴水平、由中下肺向上肺扩展，且肺的间质系统均有明显改变，小叶间隔、小叶内间隔及中轴间质的增厚；晚期肺的间质纤维化呈急速发展并伴有进行性肺组织及肺结构的破坏。结论：急性间质性肺炎的影像学表现具有相对的特征性，急进性的影像学变化，尤其急进性的肺间质纤维化和肺结构的破坏是诊断的关键。

Imaging diagnosis of acute interstitial pneumonia

Objective To discuss imaging features of acute interstitial pneumonia.Methods Serial imaging materials of 7 cases of acute interstitial pneumonia proved by open-lung biopsy or clinical comprehensive diagnosis were retrospectively analyzed.Results In the early stage of acute interstitial pneumonia,the ground-glass opacities and consolidations were loosely distributed over the bilateral peripheral zones of middle or lower lung.In the middle phase of acute interstitial pneumonia,these opacities and consolidations progressed quickly into the axial plane or the upper pneumal zones,and the interlobular septums,the intralobular interstitiums,the axial interstitiums all thickened.In the late phase of acute interstitial pneumonia,the pulmonary interstitial fibrosis and the pulmonary architectural injury progressed rapidly.Conclusion Acute interstitial pneumonia possess relative imaging feature,and the imaging variation advancing sharply,particularly the pulmonary interstitial fibrosis and the progressive pneumal architectural injury are the funishing diagnostic evidences.