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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Pharm Res. 2017 Jun 22;34(10):2049–2065. doi: 10.1007/s11095-017-2210-7

Table 1.

Characteristics of three particle forms delivering the same deposited dose per surface area in G13.

2.64 μm Microparticles 2.64 μm Nanoaggregates 50 nm Nanoaerosols
Particle density (BD and FP) [g/cm3] 1.3 1.3 1.3
Mass of 1 particle [ng] 0.01252 0.01252 each nanoaggregatea 8.51E-8
Integer number of particles in airway 6 6 nanoaggregatesb 147,121 nanoparticles each 882,726
Number of simulated parcels 6 600 24,000
Number of particles per parcel 1 1471 36.8
Total drug mass deposited in airway [ng] 0.0751 .0751 0.0751
Deposited dose per surface area [ng/cm2] 1.22c 1.22 1.22

Surface area of one G13 airway: 0.06158 cm2 Deposited dose based on CFD estimates: 1.3 ng/cm2

a

Packing fractions are not included

b

Nanoparticles composing the nanoaggregates have a diameter of 50 nm

c

Value is different from the target of 1.3 ng/cm2 due to the need of an integer number of microparticles