Objective: Coronavirus disease-19(COVID-19) is the most serious infectious disease in the world at present. Accurate diagnosis of this disease in clinic is very important. this study aims to improve the differential ability of COVID-19 and other community acquired pneumonia(CAP) by CT,and to evaluate the short-term prognosis of patients.
Methods: The clinical and imaging data of 165 COVID-19 and 118 CAP patients diagnosed in seven hospitals in Anhui Province,China from January 21,2020 to February 28, 2020 were retrospectively analyzed.
Results:The sensitivity and specificity of age, white blood cell count, and ground glass shadow in the diagnosis of COVID-19 were 92.7% and 66.1%,respectively. Pulmonary consolidation,fiber cord,and bronchial wall thickening were used as indicators to exclude COVID-19.The sensitivity and specificity were 78.0% and 63.6%, respectively.The follow-up results showed that 67.8% (112/165) of the cases of COVID-19 had abnormal changes in lung residual levels,and the pulmonary sequelae of patients over 60 years of age became more severe with age.
Conclusion:CT combined with clinical conditions, lung lesion density、 morphological characteristics and other associated signs, has a high accuracy for the early diagnosis of COVID-19 and the differential diagnosis of CAP.patients with COVID-19 infection over 60 years have poor prognosis.