FIG 2. Lateral scout view showing skeletal and soft tissue profile landmarks and the levels at which CT sections were obtained. S, sella; N, nasion; A, subspinale; B, supramental; H, hyoid; MP, mandibular plane; U, tip of the uvula; PNS, posterior nasal spine; SP-max, maximum thickness of the soft palate; level 1, level of tip of the uvula; level 2, level of hypopharynx.