ground-glass opacities with a rounded morphology in both upper lobes

Defined as "thickened interlobular septa and intralobular lines with superimposed ground-glass opacification"

crazy-paving pattern

peripheral distribution

Three of the 21 patients showed normal chest CT examinations

Smith College

Chest CT images of COVID-19 patients showed some similarities with images of patients suffering from the same viral family (SARS & MERS)
-	 predominance in the peripheral regions
-	 associated with crazy-paving pattern
-	 “absence of pulmonary cavitations, pleural effusions, lymphadenopathy”



Chest CT images of COVID-19 patients that are different from other coronaviruses
-	 showed no definite lobar or craniocaudal distribution
-	 no discrete pulmonary emphysema or fibrosis


Chest CT Imaging Features of COVID-19 Patients from Study #1

Chung, M., Bernheim, A., Mei, X., Zhang, M., Huang, M., Zeng, X., Cui, Z., Xu, W., Yang, Y., Fayad, Z., Jacobi, A., Li, K., Li, S., Shan, H.  CT Imaging Features of 2019 Novel Coronavirus (2019-nCoV). Radiology. 2020. doi: 10.1148/radiol.2020200230

https://pubs.rsna.org/doi/10.1148/radiol.2020200230

CT Imaging Features of 2019 Novel Coronavirus (2019-nCoV)

Patient Selection for CT Imaging Features from Study #1

Initial Results for CT Imaging from Study #1

Eight patients, including those who showed normal chest CT examinations, underwent follow-up chest CT scans.

Time between initial CT and follow-up CT:


mean: 2.5 days
range:  1–4 days

- one infected patient (13%) with normal initial scan showed no change
- another patient with normal initial scan showed a new solitary, rounded peripheral ground-glass lesion in CT image taken after 3 days


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