Figure 5.

Sagittal view showing external nose (gray transparent) and morphology of the nasal vestibule airway (gold solid) for each phenotype. (a) significant notch (notch index > 5%). (b) small notch (notch index < 5%). (c) no notch (notch index = 0%). The “n” values indicate the number of sides that were categorized into each phenotype. Airflow streamline patterns in the nasal cavity were categorized based on the formation of anterior–superior airflow vortex. Depending on its nasal notch index (=0%; <5%; >5%) and vortex index (=0%; <20%; >20%), unilateral nasal cavities were categorized into nine different types. The “n” values indicate the number of sides of all subjects that were categorized into each type.