Characteristic
Lobular size sign
Fusion lobular sign
Interlobular septal thickening
Intralobular vascular thickening
Intralobular interstitial thickening
COVID-19
Single stage +++ +++ + ++ ++
Multi-stage + ++ + + +
Early stage ++ ++ + + +
Advanced Stage ++ +++ + ++ ++
Severe stage + +++ + ++ ++
Recovery stage + ++ ++ + ++
Non- COVID-19 + + + +