A 42-year-old man was evaluated for snoring and sleep apnea. Overnight polysomnography revealed 28 events per hour on the apnea-hypopnea index. To determine the site of obstruction and determine treatment, dynamic MRI with concurrent EEG monitoring in natural sleep was performed. We recorded 2 mechanisms of total occlusion: at the oropharyngeal level and due to movement of the uvula during snoring (videos 1 and 2).1 Two different mechanisms suggested against surgical therapy; he was treated with a continuous positive airway pressure mask at 7 cm H 2 O, with a good outcome.