Fig. 1.
59 year old woman with history of Covid-19 pneumonia 6 months prior to MRI. (A) CT demonstrates bilateral interstitial and groundglass opacities, peripherally in the right upper lobe, and both central and peripherally in the left upper lobe. (B) MRI obtained two weeks after CT shows opacities in similar extent and distribution. Also note the sharp, geographic demarcation of the central left upper lobe groundglass medially on both CT and MRI (arrows). The AP diameter of the chest is decreased on MRI in comparison CT, which may relate to imaging at full inspiration for CT, with quiet breathing during 5-minute MRI acquisition.