Table 1.

Percent changes in the quantitative analysis of lung ground-glass opacification and the density of ground glass at baseline, 11-months and 18-months.

Percent changes (%)	Baseline	11-month follow-up	18-month follow-up
Total opacification of whole lung	96.4	67.4	64.6
Opacification of right upper lobe	100	44.7	66.6
Opacification of right middle lobe	100	94.1	88.4
Opacification of right lower lobe	100	74.2	58.6
Opacification of left upper lobe	98.2	71.9	70.7
Opacification of left lower lobe	94.6	93.4	59.5
HU between –∞ and −750	8.2	14	8.2
HU between −750 and −300	41.6	35.5	49.5
HU between −300 and 49	31.2	13.3	6.4
HU of 50+	13.2	4.2	0.5

HU, Hounsfield unit.