目的 总结原发性间质性肺炎 HRCT特征并探析其临床诊断应用价值。 方法 以我院2011年1月-2015年8月收治 96例原发性间质性肺炎疑似患者为例， 均行HRCT检查，对原发性间质性肺炎 HRCT影像表现特征进行总结。结果 96 例患者HRCT共获得576个层面图像，以 磨玻璃影、小叶间隔增厚、支气管血 管束增粗、小叶内间质增厚、细支气 管扩张、蜂窝影等较为常见，分别为 81.1%、79.2%、71.0%、58.0%、44.4%、 42.9%；此外还包括小叶内结节影、肺 气肿、气腔性实变影、网格影、胸膜下 线影、囊性变、间质结节、马赛克征， 分别为16.3%、15.1%、15.8%、10.6%、 7.3%(42/576)、6.6%、3.6%、2.2%。结 论 原发性间质性肺炎的HRCT表现具有一 定特征，可为临床诊断提供较大参考。

Objective To summarize the HRCT findings of primary interstitial pneumonia and to analyze its clinical diagnostic value. Methods 96 cases of patients with suspected primary interstitial pneumonia treated in our hospital during January 2011 to August 2015 were studied. All patients underwent HRCT examination. The HRCT imaging findings of primary interstitial pneumonia were summarized. Results A total of 576 images were obtained from 96 patients by HRCT. Ground-glass shadows, intralobular interstitial thickening, broncho-vascular tracts thickening, bronchiolectasis and honeycombing shadows, etc. Were common, accounting for 81.1%, 79.2%, 71.0%, 58.0%, 44.4%and 42.9%, respectively; In addition, it also included intralobular nodular shadow, pulmonary emphysema, air space consolidation shadow, grid shadow, subpleural linear shadow, cystic degeneration, interstitial nodules and mosaic signs, accounting for 16.3%, 15.1%, 15.8%, 10.6%, 7.3%, 6.6%, 3.6%and 2.2%, respectively. Conclusion The HRCT findings of primary interstitial pneumonia have certain characteristics, which can provide great reference for clinical diagnosis.