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Evaluation of Pharyngoesophageal Segment Using 320-Row Area Detector Computed Tomography
Pattra Wattanapan1,2, Hitoshi Kagaya1, Yoko Inamoto3
11 Department of Rehabilitation I, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan.
Objectives::
The aim of this study was to determine the shape and area of the pharyngoesophageal segment (PES) during swallowing using 320-row area detector computed tomography, which can acquire a volume data set covering a 16-cm area in a single rotation.
Methods::
Twenty healthy subjects were scanned during swallowing 3, 10, and 20 mL of honey-thick barium (5% w/v). PES was identified using cross-sectional images of 0.5-mm slice thickness, and the area in each section was measured.
Results::
The PES opening area and the anteroposterior and lateral diameters of the PES were volume dependent. However, there was no statistical difference in anteroposterior and lateral diameters between 3- and 10-mL bolus swallowing.
Conclusions::
Three hundred twenty-row area detector computed tomography provided new information about PES. This technique will facilitate further understanding of the mechanisms of PES opening and swallowing physiology.
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