الفهرس 
Anatomy of the LungOnly 14 pages are availabe for public view
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Abstract
Background: COVID-19 is an infectious disease caused by severe acute respiratory syndrome corona virus. First case was reported in Wuhan –china in December 2019 before spreading. Current outbreak officially recognized as pandemic. COVID-19 typically presented with systemic and or/respiratory manifestation.
Aim of the Work: The aim of the study is to evaluate the validity of chest CT in the diagnosis of COVID-19 pneumonia.
Patients and Methods: To elucidate this aim, a number of 32 patients ,25 patient were males(78.1%) and 7 patient were females(21.8%) their ages ranged from 28 to 86 years with the mean age of the studied cases was 39.43± 12.19 y. There were 16 patients (50%) of the studied cases had multilobar involvement. Regarding to distribution of the location of ground glass opacity, 21 patients (65.6%) of the studied cases had peripheral location. According to lobar site, there were 24 patients (75%) had lower involvement.
Results: Regarding to CT severity score, slightly half 15 patients(46.8%) of the studied cases had severe involvement, 4 patients 12.5% had mild score and 13 patients 40.6 % had moderate CT severity score. As regard to predictors of bad outcome in patients with covid 19, the significant predictors of bad outcome in patients with covid 19 were multilobar Involvement, GGO and higher CT severity score. In this study, CT had excellent Diagnostic performance with an AUC of 0.895 with a sensitivity of 85.93% and specificity of 83.45% in assessment of COVID- 19 Pneumonia.
Conclusion: CT examinations appear sensitive COVID- 19 detection and thus may be useful as a standard method for the diagnosis of COVID-19 based on CT features and rules of transformation.