Table 2.

Intensity properties of lung parenchyma from dynamic MRI at end of expiration (EE) and end of inspiration (EI) for TIS patients (pre-operative (Pre-op) and post-operative (Post-op)) and normal children. Mean ± standard deviation and p values from paired t-testing between EE and EI are shown. P values less than 0.05 are highlighted in bold.

		Mean	Median	Mode	Maximum	Minimum
TIS Pre-op	EI	112 ± 52	64 ± 31	36 ± 16	3759 ± 460	0 ± 0
	EE	136 ± 64	81 ± 44	41 ± 25	3723 ± 452	0 ± 0
	p: EE vs. EI	0.001	0.007	0.30	0.70	N/A
TIS Post-op	EI	82 ± 39	49 ± 24	31 ± 16	3719 ± 637	0 ± 0
	EE	112 ± 39	66 ± 23	37 ± 12	3661 ± 634	0 ± 0
	p: EE vs. EI	0.003	0.006	0.06	0.69	N/A
Normal	EI	54 ± 12	24 ± 5	10 ± 2	1990 ± 631	0 ± 0
	EE	58 ± 12	26 ± 5	11 ± 2	2074 ± 770	0 ± 0
	p: EE vs. EI	< 0.001	< 0.001	0.21	0.40	N/A