“…While the main technique for COVID-19 diagnosis is the reverse transcription polymerase chain reaction (RT-PCR) test-kits, medical imaging such as Computed tomography (CT), magnetic resonance imaging (MRI), Positron Emission Tomography (PET), Ultrasound (US), and chest X-ray (CXR) is an important alternative way for detection. Both CT and CXR can indicate abnormalities of lung disease, including COVID-19 [2] , [3] . Even though CXR is more accessible around the world hospitals, chest CT scan is more sensitive than CXR for early detection of COVID-19 disease changes, as well as for staging of the disease and monitoring progression [4] , [5] .…”