72例SARS的胸部X线影像分析

Chest X-ray appearances in SARS: analysis of 72 cases

目的 研究严重急性呼吸综合征 (SARS)患者X线胸片的改变和影像动态变化。方法对 72例SARS的X线表现进行分析 ,包括X线胸片异常出现的时间、病变最为严重的时间及病变吸收的时间和影像形态。结果 胸部X线异常出现的时间多在发病后的 4～ 7d( 53例 ,73 .6% ) ,X线表现最为严重的时间多在发病后的 8～ 14d( 54例 ,75.0 % ) ,多数病变吸收的时间多为发病后的 15～2 1d( 3 7例 ,51.4% ) ,病变的主要特点是以双侧或单侧的单发或多发大片状模糊影 ( 58例 ,80 .6% ) ,最严重时期变化快。部分病人病变呈游走性改变。X线片上病变吸收后 1个月内CT证实肺内仍具有病变者占 55.0 % ( 11/2 0例 )。结论 胸部X线片可反映SARS患者病变的动态变化 。

Objective To study the chest X-ray appearances and dynamic imaging changes in severe acute respiratory syndrome diagnosed clinically. Methods The sequential chest X-ray examinations at 1-4 day intervals were performed in 72 patients with severe acute respiratory syndrome. Results The findings on chest X-ray images were analyzed. The abnormalities on the chest X-ray films most commonly occurred at 4-7 days after onset (53 cases, 73.6%), and the most severe manifestations on the chest films usually presented at 8-14 days (54 cases, 75.0%). The absorption of the abnormal changes on the films occurred at 15-21 days in most cases (37 cases, 51.4%). The main features included bilateral or unilateral single or multiple patchy shadows (58 cases, 80.6%), and the lesions changed rapidly at the peak period. The lesions presented wandering features in some cases. The lesions still remained on CT scans in 11 cases (11/20, 55.0%) within one month after the absorption on X-ray film. Conclusion The chest radiography can be used to display dynamic changes of SARS, but it isn't able to distinctly demonstrate tine pulmonary lesions of SARS.