Table 1.

Repeated-measures ANOVA (nested) for differences between FV, ADC, and volume

		FVm		FVh		ADC		Volume
Source	df*	F	P	F	P	F	P	F	P
Conditions	2	8.72	0.002	15.25	<0.001	8.04	0.003	4.15	0.030
Rats in conditions	21	0.95	0.542	2.39	0.911	0.74	0.754	0.16	0.999
Slices in rat	24	1.97	0.008	0.62	0.021	3.82	<0.001	4.52	<0.001
Lobes in slice	144
Post hoc†		Z	PTukey	Z	PTukey	Z	PTukey	Z	PTukey
Baseline − 1 h	2	4.11	<0.001	11.08	<0.001	3.168	0.004	−1.312	<0.001
1 h − recruitment	2	−2.14	0.083	−8.48	<0.001	−3.205	0.004	1.233	<0.001
Baseline − recruitment	2	1.98	0.118	2.60	0.025	−0.037	0.999	−0.079	0.775

ADC, apparent diffusion coefficient; FV, fractional ventilation; FV_m, mean fractional ventilation; FV_h, heterogeneity of fractional ventilation (i.e., the standard error of FV).

^*Degree of freedom. †Using Tukey's test.