Fig. 23From: Chest imaging using signs, symbols, and naturalistic images: a practical guide for radiologists and non-radiologistsMosaic attenuation. Mosaic pattern in a patient affected by asthma. Lung parenchyma shows different attenuation areas, due to presence of pulmonary lobules with decreased density, caused by air-trapping. This appearance recalls a mosaic, as clearly evident in the embedded figure.Back to article page