Objectives: The purpose of this study was to observe the chest HRCT manifestation evolution of the 105 patients with pneumonia caused by SARS-CoV-2.
Methods: 105 confirmed patients were enrolled from January 11, 2020 to February 9, 2020. Chest HRCT were performed. The number of affected lung lobes, lesion shape, density, range, and dynamic changes of various lesions in each CT examination of each patient were recorded to comprehensively evaluate whether it is improved.
Results: CT images of 105 confirmed patients were collected. The patients underwent 2-7 chest CT examinations. M/F ratio: 49/56. The age range was 23-72 y, and the mean age was 48.6±13.1 y. The patients' chest CT examinations were divided into 5 groups according to the re-examination interval, group A (25 cases): ≤3 days, group B (70 cases): 4-7 days, group C (75 cases): 8-14 days, group D (29 cases): 15-21 days, group E (4 cases):> 21 days. There was significant difference in the improvement and progress rates between group B and C. Furthermore, the changes of ground glass nodules (GGO), consolidation and cord lesions in each group were recorded.
Conclusions: The chest CT manifestations of the patients changed rapidly, and the re-examination of 7-14 days was of great significance in evaluating the prognosis of patients while minimizing the radiation dose.