Background After the spread of COVID-19 pneumonia, chest CT examination was used as a substantial non-invasive complement to RT-PCR for diagnosing and as a rapid screening tool when RT-PCR results are unavailable. Our study aimed at the analysis of the lung abnormalities detected by chest CT in COVID-19 pneumonia according to the severity and duration of symptoms. Results In the early phase ( n = 60), 32 patients had negative CT findings and 28 patients had positive findings with a mean total lung severity score of 2.13. In the intermediate phase ( n = 116), 4 patients had negative CT findings and 112 patients had positive findings with a mean total lung severity score of 16.08. In the late phase ( n = 36), all patients had positive findings with a mean total lung severity score of 17.83. CT lung abnormalities were progressed on follow-up CT studies. We found a high total lung severity score in many patients with mild symptoms with a mean of 14.77 and a low total lung severity score in many patients with moderate to severe symptoms with a mean of 9.14. Conclusion Chest CT should be used as a routine examination for diagnosing COVID-19 pneumonia and follow-up of disease advance. The progression of lung abnormalities was related to the duration more than the severity of symptoms.
【저자키워드】 coronavirus, COVID-19 pneumonia, Computed tomography, ground-glass opacity, PCR, Duration and severity, 【초록키워드】 COVID-19, Pneumonia, severity, lung, complement, progression, RT-PCR, Chest CT, Patient, Follow-up, disease, Analysis, Non-invasive, Mild symptom, chest CT examination, early phase, severity of symptoms, diagnosing, positive, late phase, spread of COVID-19, Result, was used, severe symptom, CT finding, duration of symptoms, lung abnormality, patients with moderate, progressed, was related, 【제목키워드】 COVID-19, correlation, lung abnormality, severity of symptom,