Each lung lobe and lingula (six lung zones) were scored quantitatively (0–24 points). 1 point (1%–25% involvement) for the inferior lobe of the left lung. Ground-glass opacities with reticular pattern with placement of the superior segment of the inferior lobe of the right lung. b. Each lung lobe and lingula (six lung zones) were scored quantitatively (0–24 points). 2 points for left lung superior lobe (25%–50% involvement). c. Each lung lobe and lingula (six lung zones) were scored quantitatively (0–24 points). 3 points forthe superior lobe of the right lung (50%–75% involvement). d. Each lung lobe and lingula (six lung zones) were scored quantitatively (0–24 points). 4 points forthe superior lobe of the right lung (75% or more involvement).