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目的 探讨传染性非典型肺炎 (又称SARS)的影像表现特征和发展规律。 方法 对 2 2例确诊为SARS的地方患者影像资料进行观察 ,就其病变发生的时间、部位、性质和病变进展情况进行分析。 结果 本组确诊患者中 ,临床症状出现 1～ 4d影像表现为阳性者占 82 %,48d影像为阳性的占 18%。多数患者的病灶首先发生在肺下野。进展期病变发展迅速 ,常累多部位及双肺 ,不以肺叶或肺段分布。好转病例 ,肺部阴影吸收一般出现在治疗后的 8～ 12d。 结论 SARS的主要影像表现为 :(1)边缘起病 ;(2 )多部位病变 ,累及下肺多于累及上肺 ;(3)影像表现与临床体征有时不符 ;(4)病变变化迅速 ;(5 )CT比X线胸片早 1～ 3d发现早期病变。影像诊断必须密切结合临床和实验室检查。
Objective To investigate the imaging features and development of SARS (SARS). Methods The local imaging data of 22 cases diagnosed as SARS were observed and the time, location, nature and pathological changes of the lesions were analyzed. Results Among the patients diagnosed in this study, clinical symptoms were 82% in 1 ~ 4 days and 18% in 48 days. The majority of patients with lesions first occurred in the lungs. Progression of the rapid development of the disease, often tired of multiple parts and lungs, lungs or lung segments are not distributed. Improved cases, the shadow of the lungs generally appear after treatment 8 ~ 12d. Conclusions The main manifestations of SARS are as follows: (1) the onset of the border; (2) the multi-site lesion involving the lower lung more than the upper lung; (3) the imaging findings are not consistent with the clinical signs; (4) the lesions change rapidly; 5) CT than the X-ray chest early 1 ~ 3d found early lesions. Imaging diagnosis must be closely combined with clinical and laboratory tests.