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Computed tomography of the pharynx in a closed vs. open mouth position. | LitMetric

AI Article Synopsis

Article Abstract

The pharynx is anatomically complex and evaluation can be difficult even with cross-sectional imaging. Eight animals had computed tomography (CT) studies of the head performed with the mouth open and closed. The studies were anonymized and evaluated by four radiologists for visibility of six anatomic regions (dorsal wall of nasopharynx, lumen of nasopharynx, dorsal margin of the soft palate, ventral margin of the soft palate, oropharynx, and laryngopharynx) and for certainty of a normal or abnormal diagnosis of four different anatomic regions (nasopharynx, soft palate, oropharynx, and laryngopharynx). Mean visual scores differed significantly between mouth positions and were improved when the mouth was open. The ability of radiologists to classify anatomic regions as normal or abnormal vs. unsure also varied between mouth positions, and there was greater uncertainty when the mouth was closed. In addition, estimated volume of the air-filled nasopharynx differed significantly as a function of mouth position and was greater when the mouth was open (mean=1.187 cm(3) , SE=0.177) vs. closed (mean=0.584 cm(3) , SE=0.116). Computed tomographic evaluation of the pharynx can be improved with the mouth open.

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Source
http://dx.doi.org/10.1111/j.1740-8261.2011.01805.xDOI Listing

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