Indeed, although the use of RT-PCR remains the keystone of the diagnosis, the delay in diagnosis as well as the overload of the microbiological platforms have led us to make almost systematic the use of thoracic imaging for taking in charge of patients. 
RT-PCR
The most common signs encountered are particularly well described in thoracic computed tomography. 
thoracic computed tomography
[Chest radiological lesions in COVID-19 : from classical imaging to artificial intelligence]. Beyond conventional chest imaging, many teams have developed new artificial intelligence tools to better help clinicians in decision-making.
artificial intelligence