a: Intubation trauma. Note irregular mucosa at posterior commissure. b: Resected epiglottis. c: Feeding tube directed down airway. d: Edema and excess thick secretions post–radiation therapy.

the anterior commissure (AC) and the posterior commissure (PC; Fig 2).In this indirect method of targeting, CT or MR images (1- to 2-mm width slices)are imported into stereotactic surgical ...