Figure 4.

Typical scintigraphic images for Respimat^®, Turbuhaler^® DPI at slow and fast inhaled flow rates, and CFC-pMDI. Reprinted from Pitcairn G, Reader S, Pavia D, et al. 2005. Deposition of corticosteroid aerosol in the human lung by Respimat^® Soft Mist™ Inhaler compared with deposition by metered dose inhaler or by Turbuhaler^® dry powder inhaler. J Aerosol Med, 18:264–72. Copyright © 2005, with permission from Mary Ann Liebert, Inc.

Abbreviations: CFC, chlorofluorocarbon; DPI, dry powder inhaler; pMDI, pressurized metered dose inhaler; SMI, Soft Mist™ inhaler.