. Author manuscript; available in PMC: 2022 Aug 1.

Published in final edited form as: Med Phys. 2021 Jul 6;48(8):4316–4325. doi: 10.1002/mp.15019

Table 4:

Agreement for computing the percentage of emphysema using scout images versus CT scans stratified by COPD severity when using the InceptionV3 model.

COPD severity	MAD (%)	R-square	Adjusted R-square
Without COPD	2.09 ± 1.37	0.710^*	0.703^*
GOLD I	3.46 ± 2.05	0.489^*	0.463^*
GOLD II	3.67 ± 2.40	0.548^*	0.532^*
GOLD III	5.06 ± 2.01	0.467^*	0.391^*
GOLD IV	4.40 ± 2.47	0.969^*	0.962^*

GOLD: Global Initiative for Obstructive Lung Disease; MAD: mean absolute difference; COPD chronic obstructive pulmonary disease

p≤0.01