Objective To reseach variation of clinical and imaging in different stages of patients with SARS.Methods The author reviewed imaging findings and the clinical manifestations of 123 cases of SARS.Results Imaging changes (1)Early stage lesions were singular focus and multifocuses.Focuses exihibited multiform and multishape.The lung parenchyma not change evidently.(2)Progressive stage focuses developed rapidly,the extent enlarged,the number of focuses increased rapidly,multiform and multishape in imaging manifestations.(3)Absorb stage focuses evidently shruink,less dense and focal fibrosis.Clinical manifestation (1)Early stage the clinical manifestations were characterized by the onset of fever,associated with systemic and joint aching pains and dry coughs.Leucocyte counts showed normal or lower than normal. (2)Progressive stage these symptoms worsened and saturation degree of blood oxygen declined.20% patients developed ARDS.80% patients recoveried and leaved from hospital.Conclusion Imaging changes in patients with SARS took after the other pneumonia and may be indistinguishable from other conditions that result in airspace disease.But imaging findings offers an important diagnostic clue to SARS,and it is valuable in showing response to therapy and understanding state of an illness.

Objective To evaluate the Imaging diagnosis of SARS in death case.Methods 11 death patients of SARS in keeping with criteria from April to May 2003 were enrolled into the study. Imaging characteristics of chest x-ray film and CT in these patients were analysed.Results All cases were positive on chest X-ray film and CT,the lung shadows were marked.The extent of the pathological changes in lungs was 80%～90% in 6 cases and 90% above in 5 cases,multilobcs of bilateral lungs were involved in all cases.The lesions were diffuse spotty shadow or shaggy cloudy shadow in 8 cases,ground-glass opacification in one case and bronchogram structures could be seen.Conclusion Imaging findings in the cases with severe SARS mostly manifest as effusion,consolidation and interstitial inflammation in multilobes of bilateral lungs.