ABSTRACT
Background: Chest CT scan has a great sensitivity with rapid diagnoses of COVID-19 infection in the community. Nevertheless,the specificity of this test for diagnosis of this disease are believed to be low. Objective: To evaluate role, effectiveness and diagnostic accuracy of chest CT scan with main imaging manifestations and hematological appearances for screening COVID-19 cases through comparing results of those with other NON-COVID-19 pneumonia. Patients and Method: Twenty COVID–19 & 28NON–COVID–19pneumoniaIraqi patients in Yarmouk teaching hospital, Baghdad, Iraq from 1 march to 1 may 2020, at the beginning of the outbreak in Iraq COVID–19 had been included in current research. Confirmed COVID–19 together with NON–COVID-19 patients to be infected or not with SARS-CoV-2 using RT-PCR were included in current research. Socio-demographic,hematological and chest CT scan finding were examined to compare the variance between COVID-19 and NON-COVID-19 patients. Result: “COVID-19” patients mean age was 62.10 ±14.308SDrangedbetween 35-90 years whereas “non-COVID-19” patients mean was 61.07± 13.638 SD.There was a significant difference between WBC average number of COVID-19 compared to its average number of “NON-COVID-19” patients (P<0.001). A significant differences between Neutrophils, lymphocytes, Monocytes, Eosinophil and Basophils low counts and MCV, MCH, PDW of COVID-19 compared to its counts or levels in “NON-COVID-19” patients (P<0.001). A significantly different of CT scanImages ‘Ground glass opacity, Crazy paving alteration’, ‘Vascular dilatations, Traction Bronchiectasis alteration’, ‘Sub pleural –bands’ & Architectura) between “COVID-19” & ”NON-COVID-19 cases (P less than 0.001), whereas Consolidation was non-significant. Conclusion: A chest CT scan might be a dependabletool for COVID-19 cases diagnosis. Hematological features that include WBC, Neutrophils, Lymphocytes, Monocytes, Eosinophil, Basophils, MCV, MCH, PDW might be substantial indications for COVID-19 appraisal.