LIN Yizi1, CHEN Li2, LI Yang1, LUO Min1, ZHENG Jun1, CEN Xiuya1, LI Yongchou1, DAI Tingting1, LIN Dou1, HE Di1, REN Huai1, GAO Yuantong1
1.Department of Radiology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China; 2.Department of Anesthesiology, the Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
Abstract：Objective: To study the CT findings and dynamic imaging changes of COVID-19. Methods: A total of 60 patients with COVID-19 from the Third Affiliated Hospital of Wenzhou Medical University from January 26, 2020 to March 15, 2020 were included. All patients underwent sequential CT examinations with an interval of 2-10 days. The CT features in the initial, progressive and dissipating stage were analyzed. Results: In the initial stage, 21 cases had small ground-glass opacities accounting for 75.0% and, 7 cases nodules accounting for 25.0%. In progressive stage, ground-glass opacities accompanied by consolidations were found in 49 cases (81.7%), prominent consolidations in 11 cases (18.3%). Multiple lesions were found in 52 cases (86.7%), 44 cases (73.3%) were found lesions in the middle and lower lobes of both lungs, and 55 case (91.7%) were mainly located under pleura. In dissipation stage, the number of lesions decreased in 49 cases (81.7%), the range decreased in 60 cases (100%) and the density decreased in 60 cases (100%). Ground-glass change were observed again in 36 cases (60.0%) and 24 cases (40.0%) had strip solid change. After absorption, 9 cases (15.0%) had residual subpleural arc shadow and interlobular septal thickening. Conclusion: CT is able to distinctly demonstrate the distribution, density, shape, and range of pulmonary lesions of COVID-19, and display pulmonary fibrosis as well. Therefore, CT can be used to display the early abnormalities and dynamic changes of COVID-19.
