Figure 3

Figure 3

Surface reconstructions from CT scans of a single patient before and after weight loss showing (A) head and neck region and (B) the upper airway. The patient showed a 5.1 cm3 increase in upper airway volume after 19 kg weight loss (approximately 18% of body weight) associated with an improvement in apnoea-hypopnoea index (AHI) from 55.9 events/h to 15.1 events/h.