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Axial T1 weighted image at the same level after sedation, showing collapse of the lateral pharyngeal walls and a reduction in the pharyngeal airway by approximately 70 % during apneic episode. Note the T-shaped appearance of the pharyngeal airway.

Axial T1 weighted image at the same level after sedation, showing collapse of the lateral pharyngeal walls and a reduction in the pharyngeal airway by approximately 70 % during apneic episode. Note the T-shaped appearance of the pharyngeal airway.