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Previous Volume 358:304-305 January 17, 2008 Number 3 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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Direct delivery of aerosolized medication to the diseased lung allows therapy to be targeted, albeit with challenges. A study recently reported by Dames et al.¹ underscores the magnet as an attractive means of fine-tuning drug delivery.

The lung has a large surface area, and the cross-sectional area of the airways increases distally, which slows the velocity of flow. The deposition of an inhaled aerosol occurs through three mechanisms (Figure 1).² The first is inertial impaction, in which a droplet fails to turn a corner and impacts the wall of the airway. The second is sedimentation, in which the . . . [Full Text of this Article]

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From the Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto.

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