胸部DR和CT对SARS诊断价值的初步研究

目的:探讨胸部DR和CT检查对SARS的诊断价值。方法:对我院2003年4~5月137例SARS患者中同时行DR和CT检查的70例患者的影像学资料进行对照研究。结果:70例中65例胸片表现异常,5例表现正常,而CT扫描均表现异常。SARS典型的胸部DR和CT表现为演变迅速的片状阴影、斑片状浸润或云絮状阴影和伴有不规则实变影、磨玻璃影或结节状阴影。病变部位以单侧单叶最多,其次为单侧多叶和双侧多叶。结论:SARS的影像学表现多种多样,无特异性。DR胸片是SARS早期诊断的首选方法,但当胸片诊断或排除困难时,本院CT室条件具备时应及时行胸部CT检查。

Thoracic DR and CT evaluation of SARS on radiograph

Objective: To evaluate the value of chest DR and CT in the diagnosis of SARS. Methods: Examination of chest DR and CT were performed in 70 patients with SARS and correlation between the two modalities were carried out from April to May 2003. Results: Chest DR showed abnormalities in 65 patients and normal in 5 patients. All patients' chest CT showed abnormalities. The most typical imaging findings of SARS were rapidly changing patch like shadows, diffuse spotty shadows, shaggy cloudy shadows, ground glass opacifications. Opacities were characterized by mostly involving one lobe, secondly, multilobes of unilateral lung and multilobes of bilateral lungs. Conclusion: Various radiographic changes can be showed in patients with SARS and may be indistinguishable from other conditions that results in lung disease. Chest DR is the most common technique for the early diagnosis of SARS. Chest CT is useful when it is very difficult to diagnose and eliminate SARS according to the findings of the initial chest films.