In the face of the COVID-19 epidemic, the National Health Commission of China has included CT features of COVID-19 as the clinical diagnosis standard for COVID-19 in Hubei Province in its official diagnosis and treatment solution released on February 4, 2020. As one of the decision-making methods for COVID-19 diagnosis and treatment, CT powers fast and effective diagnosis and evaluation. However, due to large numbers of lesions in lungs and rapid changes, multiple rechecks and image reviews are required in a short period of time, significantly increasing the workloads of imaging doctors. What's worse, imaging doctors who can accurately diagnose and quantitatively analyze COVID-19 are insufficient in number, so the diagnosis efficiency cannot be greatly improved.
