Table 2.

Relative Distribution of Particles Retained in the Lung Slice (ROI_dep) at Different Times (0 Hour, 1 Hour 30 Minutes, and 22 Hours) and Regional Fraction of Ventilation in the Same Lung Slice

	Deposition (%)
	t = 0 h	t = 1 h 30 min	t = 22 h	Ventilation (%)
Apical	12.8 ± 1.6	13.0 ± 3.7	10.1 ± 4.2	11.4 ± 3.5
Mid-apical	23.4 ± 2.2	24.0 ± 2.4	22.2 ± 6.9	22.4 ± 4.6
Mid-diaphragm	30.0 ± 1.6	29.9 ± 1.8	31.7 ± 5.3	28.7 ± 1.2
Diaphragmatic	33.9 ± 3.7	33.1 ± 5.1	36.0 ± 7.7	37.5 ± 7.8

Data are averaged over seven subjects (mean ± SD).

ROI, region of interest.