Table 4.

Regional perfusion data at RV, FRC and TLC (means ±s.d., n= 7)

Lung volume	RV	FRC	TLC	Pvolume
Non-dependent perfusion (ml min−1 g−1)	7.9 ± 2.0	7.7 ± 1.5	3.6 ± 3.3*†	<0.001
Intermediate perfusion (ml min−1 g−1)	8.9 ± 3.1	8.1 ± 2.9	7.4 ± 3.6	0.26
Dependent perfusion (ml min−1 g−1)	6.6 ± 2.4†	6.1 ± 2.1†	6.4 ± 2.6	0.51
Pregion	0.007	0.009	0.002

P_volume, omnibus P for the effect of lung volume; P_region, omnibus P for the effect of lung region.

^*Significantly different from RV and FRC, P < 0.005

^†significantly different from other 2 regions, P < 0.05.