Limitation
There were several limitations in this study. First, none of the patients underwent a lung biopsy or autopsy, because of the comparatively better outcomes of the patients in this study. Therefore, the HRCT findings of the lung could not be verified by histopathology. Finally, this was a study with initial HRCT images during hospitalization, mainly demonstrated the early pulmonary lesions in patients with COVID- further longitudinal research was needed to focus on the long-term follow-up, to provide dynamic HRCT evaluation for pulmonary lesions and to obtain the data of long-term pulmonary function changes.