Abstract: Objective To get a better of understanding and diagnosis of SARS in image.Methods X-ray imaging of 52 case of cl inically confirmed of SARS diseases were analyzed retrospectively.Results The main X-ray changes included:(1)Lung markings thick ening,hardening,observed as “withered branch”；(2)Brightness of lung field was d rop,density of lung field increased；(3)Lung markings manifold,observed patchy sh adow to be along with lung markings；(4)Density of interstitial increased,observe d net,small nodes and infiltration shadow in interstitial；(5)Lung segmental or t otal lobar became consolidation.Conclusion X-ray finding of SA RS was varied and changes quickly.Obvious abnormalities were seen on the film wh ich were in sharp contrast with the mild clinical respiratory symptoms.Understan ding X-ray finding of SARS to be helpful of diagnosis,treatment and isolation early.

Key words: SARS/radiography