. Author manuscript; available in PMC: 2017 Oct 1.

Published in final edited form as: Respir Med. 2016 Aug 31;119:96–101. doi: 10.1016/j.rmed.2016.08.028

Table 1.

IPF Thin-Section CT Scoring System

Score	Ground Glass Involvement
0	No disease
1	Ground glass opacities (GGOs) involving <5% of lobe
2	GGOs ≤ 25% of lobe
3	GGOs 25–49% of lobe
4	GGOS 50–75% of lobe
5	GGOs > 75% of lobe

Score	Interstitial Involvement
0	No interstitial disease
1	Honeycombing (+/− septal thickening) < 5% of lobe
2	Honeycombing (+/− septal thickening) < 25% of lobe
3	Honeycombing (+/− septal thickening) 25–49% of lobe
4	Honeycombing (+/− septal thickening) 50–75% of lobe
5	Honeycombing (+/− septal thickening) > 75% of lobe