64例新型冠状病毒肺炎患者的CT影像学特征分析

目的 通过分析2019冠状病毒肺炎（Coronavirus Disease 2019，COVID 19）患者胸部薄层CT的影像表现，分析其演变过程，熟悉其肺部CT表现，了解其病程特点。方法 收集我院2020年1-3月核酸检测确诊为COVID 19的64例患者资料，分析胸部薄层CT表现，64例患者均进行5次胸部CT扫描，其中4例肺部CT未见异常，研究另60例患者CT演变特点。结果 COVID 19的CT表现多变，主要表现为双肺不对称分布胸膜下为主实变或磨玻璃密度影，最初铺路石征较多见，后来向模糊影、条索影变化，本组病例患者症状发作后的第1周和第2周肺部病变显著增加，随后肺部CT评分逐渐下降，双肺下叶CT评分较高，其次是右肺上叶，左肺上叶CT评分最低。结论 COVID 19大部分病例肺部病灶在28天左右可完全消失，但我们需要经过长期大样本随访观察肺部是否会遗留不可逆损伤。

Analysis of CT imaging characteristics of 64 patients with novel coronavirus pneumonia

Objective To analyze the CT manifestation of the chest thin layer CT of patients with Coronavirus Disease 2019(COVID 19), analyze its evolution process, familiarize with the CT manifestations of the lungs, and to understand the characteristics of the course of the disease. Methods The data of 64 patients diagnosed with COVID 19 by nucleic acid detection in our hospital from January 2020 to March 2020 were collected, and the chest thin layer CT manifestation was analyzed. All 64 patients underwent 5 chest CT scans, 4 cases of which showed no abnormalities in lung CT, and the CT evolution characteristics of the other 60 patients were studied. Results The CT findings of Covid 19 were variable, and the main manifestations were asymmetric distribution of both lungs, consolidation under pleura or ground glass density shadow. At first, the paving stone sign was more common, and then it changed to the blur shadow and the strip shadow. In this group of patients, lung lesions increased significantly in the first and second weeks after the onset of symptoms. Subsequently, the CT scores of the lungs gradually decreased, and the CT scores of the lower lobes of both lungs were higher, followed by the upper lobe of the right lung, and the upper lobe of the left lung had the lowest CT score. Conclusion In most cases of COVID 19, the lung lesions disappeared completely in about 28 days, but we needed to follow up with large samples for a long time to observe whether the lungs would have irreversible damage.