Table 2.

Phantom Airway Measurements with Phase Congruency at Different Fields of View

		Field of View
Airway	Airway Metric	30 cm	15 cm	10 cm	ANOVA p- value3	10 cm vs. 30 cm p-value4	15 cm vs. 30 cm p-value4	10 cm vs. 15 cm p-value4
11	ID (mm)	2.232 ± 0.043	2.246 ± 0.039	2.255 ± 0.037	0.0908	n/a	n/a	n/a
	WT (mm)	1.195 ± 0.014	1.174 ± 0.015	1.174 ± 0.014	<0.0001	<0.0001	<0.0001	0.7277
	WA (mm2)	12.860 ± 0.123	12.609 ± 0.139	12.604 ± 0.124	<0.0001	<0.0001	<0.0001	0.9812
	WA%2	76.608 ± 0.701	76.078 ± 0.701	75.936 ± 0.659	0.0014	0.0018	0.0146	0.6411
2	ID (mm)	5.730 ± 0.024	5.732 ± 0.013	5.732 ± 0.013	0.8505	n/a	n/a	n/a
	WT (mm)	1.138 ± 0.004	1.117 ± 0.005	1.116 ± 0.005	<0.0001	<0.0001	<0.0001	0.7790
	WA (mm2)	24.535 ± 0.119	24.022 ± 0.110	24.003 ± 0.110	<0.0001	<0.0001	<0.0001	0.7630
	WA%2	48.758 ± 0.185	48.217 ± 0.169	48.199 ± 0.155	<0.0001	<0.0001	<0.0001	0.8861
3	ID (mm)	6.140 ± 0.021	6.162 ± 0.013	6.162 ± 0.013	<0.0001	<0.0001	<0.0001	0.9991
	WT (mm)	1.296 ± 0.009	1.287 ± 0.007	1.286 ± 0.007	<0.0001	<0.0001	<0.0001	0.8977
	WA (mm2)	30.227 ± 0.261	30.105 ± 0.214	30.080 ± 0.203	0.0029	0.0045	0.0141	0.9042
	WA%2	50.554 ± 0.209	50.242 ± 0.143	50.223 ± 0.155	<0.0001	<0.0001	<0.0001	0.9200

¹Airway 1 includes measurements from only 18 images due to errors in obtaining phase congruency measurements on two non-contiguous images

²WA% is dimensionless and calculated as follows: WA/total area (TA) × 100

³Overall test of differences among FOV levels from repeated measures analysis of variance

⁴Tukey-adjusted pairwise comparison