. Author manuscript; available in PMC: 2022 May 27.

Published in final edited form as: Phys Med Biol. 2021 May 31;66(11):10.1088/1361-6560/ac01b4. doi: 10.1088/1361-6560/ac01b4

Table 2.

Lung volume variation during respiration in 4D-CT.

Lung volume (cc)		Phase 2	Phase 3	Phase 4	Phase 5 (EOE)
Training group	Reference	4372.9 ± 1603.3	4240.1 ± 1600.0	4103.7 ± 1573.2	3991.9 ± 1535.6
	Simulation	4399.8 ± 1592.0	4319.4 ± 1586.3	4239.0 ± 1574.0	4105.7 ± 1597.7
	%Difference	1.0%	2.5%	3.8%	5.4%
Validation group	Reference	3313.3 ± 675.11	3225.4 ± 650.59	3137.9 ± 621.17	3081.2 ± 592.35
	Simulation	3338.9 ± 657.94	3311.8 ± 651.49	3275.2 ± 642.34	3244.7 ± 634.28
	%Difference	1.2%	2.9%	4.6%	5.3%
Testing group	Reference	3543.0 ± 1341.5	3416.2 ± 1339.0	3313.5 ± 1294.1	3248.6 ± 1269.8
	Simulation	3550.2 ± 1317.8	3500.7 ± 1306.5	3456.6 ± 1291.6	3420.8 ± 1277.9
	%Difference	0.7%	3.1%	4.8%	5.8%