Fig. 3.

(A) Efficiency index η (open symbols) and homogeneity index 1/SD (filled symbols) as functions of the tracheal flow rate for total dose volumes of 2, 3, 4, and 5 mL in the 1-kg neonate lung, which are from reported neonatal SRT protocols (26). For each total dose value, one-half is delivered in each of two positions, RLD and LLD. (B) Same positions and plot as in A, but in the 70-kg adult lung for total dose volumes of 70, 140, 280, and 420 mL The first three dose volumes are from reported adult SRT protocols, 70 mL (9, 10) and 140 and 280 mL (6).