• A E Alexander, G D Lyons, M A Fazekas-May, P L Rigby, D W Nuss, L David, and K Williams.
• Department of Otolaryngology, Louisiana State University Medical Center of New Orleans, USA.
• Ann Oto Rhinol Laryn. 1997 Dec 1; 106 (12): 1020-3.

AbstractConventional computed tomography (CT) has been considered a mainstay in the evaluation of the larynx. A major difficulty with utilizing this modality, especially in the study of the arytenoid, is the time necessary to perform a thin-slice examination through a structure that has a propensity to move with respiration and swallowing. Helical CT not only significantly reduces the time necessary to study the larynx, but enables one to perform multiple high-resolution multiplanar reconstructions. Eleven patients with arytenoid abnormalities documented by strobovideolaryngoscopy or direct laryngoscopy were imaged with helical CT. A comprehensive radiographic examination illustrating the cricoarytenoid relationship in all of the subjects was completed in less than 20 seconds by using axial reconstructions in 2-mm-thick slices at 1-mm intervals, with subsequently derived sagittal and coronal reconstructions. Helical CT may be a useful adjunct in the diagnosis of arytenoid subluxation or dislocation.

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