The relationship between the severity of pulmonary involvement in the CT scan of patients with Covid-۱۹ and the threshold cycle of SARS-CoV-۲

INTRODUCTION: there is no clear relationship between the threshold cycle of COVID-۱۹ and severity of pulmonary involvement in the CT scan of patients. Methods: ۲۵۴ patients were included. The number of cycle of threshold virus, was extracted. The severity of pulmonary involvement was categorized based on the percentage of involvement of each lobe Based on CT scan. The relationship between the CT number and the involvement in the CT scan, was measured.Results: ۲۵۴ patients with COVID-۱۹ such as ۱۵۸ (۶۲.۲%) men and ۹۶ (۳۷.۸%) women with a mean age and standard deviation of ۱۷.۷۸۵ ± ۶۰.۹۹ years. The average threshold cycle (CT Value) is ۵.۹۱۲ ± ۱۹.۳۸ and it’s minimum and maximum are ۹ and ۳۶. The percentage of right lung involvement was ۲۹.۷±۴۶.۷% and the percentage of left lung involvement was ۲۹.۸±۴۷.۸%. The number of people without conflict is ۶ (۲.۴) %, with mild conflict ۳۹ (۱۵.۴) %, moderate ۶۵ (۲۵.۶%) and severe ۱۴۴ (۵۶.۷%). The number of people without involvement of the right lobe is ۱۱ (۴.۳%), score ۱, ۴۲ (۱۶.۵%), score ۲, ۷۵ (۲۹.۵%), score ۳, ۵۱ (۲۰.۱%), involvement Score ۴, ۷۵ (۲۹.۵%).The number of people without left lobe involvement is ۱۲ (۴.۷%), score ۱, ۴۶ (۱۸.۱%), score ۲, ۷۱ (۲۸%), score ۳, ۴۸ (۱۸.۹%), involvement Score ۴, ۷۷ (۳۰.۳%) .Conclusion: With the increase of lung involvement, the amount of threshold cycle has decreased, which can indicate the inverse relationship of threshold cycle with the severity of disease involvement.

کلیدواژه ها:

Threshold cycle ، Covid-۱۹ virus ، severity of pulmonary involvement ، CT Scan