Initial CT Findings and CO-RADS Stage in COVID-19

Inclusion Criteria: * Aged 18 years and over, * Having SARS-CoV-2 RT-PCR test and chest CT examinations performed at the time of application or within 24 hours after admission * RT-PCR positivity in nasopharyngeal swabs sample, and/or the presence of clinical and laboratory findings of SARS-CoV-2 infection and/or the presence of COVID-19-compatible radiological findings in chest CT, and being diagnosed with COVID-19 Exclusion Criteria: * Patients with negative SARS-CoV-2 PCR test, pneumonia on CT but not given Covid-19 treatment by not considering Covid-19 by their doctor will not be included. * Patients whose data are not available * Patients with poor CT image quality * Patients who were transferred to another hospital