Table 3.

Deposition (DE) and Dispersion (H) Data (Mean ± SD) for 1 μm-Diameter Particles

	DE, %		H, mL
Vp, mL	Air	Heliox	Air	Heliox
150	14.7 ± 4.6	10.5 ± 5.3	212 ± 39	209 ± 22
300	22.9 ± 4.7	20.4 ± 5.2	287 ± 38	279 ± 21
500	33.8 ± 5.2	33.7 ± 5.8	388 ± 40	372 ± 27
800	50.1 ± 6.5	53.5 ± 7.9	539 ± 51	513 ± 43
1200	71.8 ± 8.7	80.0 ± 11.7	741 ± 71	699 ± 69

V_p, penetration volume.