Dry Powder and Budesonide Inhalation Suspension Deposition Rates in Asthmatic Airway-Obstruction Regions

Figure 2

Andersen Instruments Inc. samplers simulating the human respiratory system. Particles 3.3–4.7 µm in diameter were deposited in the trachea and primary bronchi (1^st to 4^th bronchial generation). On Andersen Cascade Impactor with 6 stages.