• Kunal Thakkar and Mike Yao.
• Department of Otolaryngology-Head and Neck Surgery, University of Illinois at Chicago, 1855 West Taylor Street, Room 3.87, Chicago, IL 60612, USA.
• Otolaryngol. Clin. North Am. 2007 Aug 1; 40 (4): 785-805.

AbstractThe standard for the diagnosis of obstructive sleep apnea (OSA) is polysomnography (PSG). Although PSG helps identify individuals who have OSA and guides medical management, it does not identify the obstruction site or predict surgical results. Radiologic and diagnostic studies have been used to direct surgical intervention and predict outcomes of sleep apnea surgery. These studies include lateral cephalometric radiographs, CT, MRI, asleep fluoroscopy, asleep and awake endoscopy, upper airway manometry, and acoustic reflection techniques. The ideal diagnostic study would identify individuals who have OSA, be cost-effective and readily accessible, and guide therapeutic, site-specific intervention with predictable results. In this article, the various modalities are reviewed in terms of their capability to effectively diagnose and guide treatment of OSA.

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