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. 2013 Sep 11;8(9):e74991. doi: 10.1371/journal.pone.0074991

Figure 6. Analysis of deposition fractions from lateral gamma camera imaging.

Figure 6

Lateral nasal deposition fractions (mean +/- standard deviation) in different compartments according to ROI’s as defined in Figure 2 in percent of total lateral nasal deposition (% TN): anterior lower (AL) = nostrils and nasal valve; posterior lower (PL) = turbinates, nasal floor, hard and soft palate; posterior upper (PU) = upper posterior nasal cavity, middle turbinate, ethmoidal and sphenoid sinuses; sphenoidal sinuses (SS). Pulsating aerosols were applied in healthy volunteers and in CRS patients before and after sinus surgery (FESS). In addition nasal pump sprays (NS) were applied in healthy volunteers. The AU analysis (frontal sinuses) was not included because deposition was below 1% in all volunteers and application modes studied. *: p < 0.05 and **: p < 0.01 compared to healthy volunteers; +: p < 0.05 ++: p < 0.01 before versus after FESS in CRS patients.