Fig 1.

Gamma camera images 2 minutes after delivery using a traditional liquid spray (a) and powder with OptiNose Breath Powered device (b) shown with a logarithmic hot iron intensity scale (reference). Deposition of spray was greatest anterior to the nasal valve and in the lower posterior region of the nose (“floor” of the nasal cavity), whereas deposition of powder was shifted to more superior posterior regions of the nose. The images were from the same subject after each method of administration.