Fig. 2
From: CT characteristics and laboratory findings of COVID-19 pneumonia in relation to patient outcome
Non-contrast axial CT of the chest of a 30-year-old male patient presented with fever and dyspnea with positive RT-PCR. The right upper lobe shows a reverse halo “atoll sign” in axial and coronal cuts (a, d). Bilateral ground-glass opacities are seen at lower lobes with peripheral distribution (b, c, e). 3D reconstruction volume rendering image shows pulmonary involvement as opaque non-transparent shadows (f). CT severity score is 7 points which corresponds to mild involvement. The patient improved on follow-up