Deniz Doğan1, *, Ferhat Cüce2, Sinan Akay2, Tunahan Ayaz3, Derya Kınık1, Ümit Savaşçı3, Yakup Arslan1, Gonca Fidan3, Nesrin Öcal1, Gülden Yılmaz3, Cantürk Taşçı1
1Department of Pulmonology, Health Science University, Gulhane Training, and Research Hospital, Ankara, Turkey - 2Department of Radiology, Health Science University, Gulhane Training and Research Hospital, Ankara, Turkey - 3Department of Infectious Diseases, Health Science University, Gulhane Training and Research Hospital, Ankara, Turkey
Introduction: In this study, we aimed to better understand the role of chest CT as an initial workup tool among all COVID-19 patients admitted to a tertiary hospital.
Materials and Methods: We retrospectively evaluated the data of patients that were suspected for COVID-19. All patients who had both noncontrast chest CT scan with RT-PCR test results included in the study. Symptomatic patients were divided into four groups according to time between the onset of symptoms and chest CT; ≤ 4 days, 5-8 days, 9- 13 days, and ≥14 days. Chest CT findings according to symptom status, duration, and RT-PCR positivity were evaluated.
Results: Data for a total of 791 patients were evaluated. The mean patient age was 51.7 ± 19.7 years. 459 (58%) patients were male, and 332 (42%) were female. 55.1% of patients had positive and 44.9% negative RT-PCR tests. Typical, indeterminate, atypical and negative chest CT findings were seen in 241 (30.5%), 131 (16.6%), 154 (19.5%), and 265 (33.5%) patients, respectively. Among 355 patients with negative RT-PCR results, 152 (42.8%) had typical or indeterminate chest CT findings. Asymptomatic patients had a 91.9% of RT-PCR positivity. Only 123 (61.5%) patients had typical or indeterminate CT findings among symptomatic and RT-PCR positive cohort.
Conclusion: The greatest value of our study is in demonstrating the value of chest CT in both patients that had symptoms but had negative RT-PCR test results and insignificance of chest CT in asymptomatic but had suspected contact with COVID-19 patients.
COVID-19, chest CT, normal, coronavirus, pandemic.