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21-01-2024 | Computed Tomography | Original Article

Prediction of Pharyngeal 3D Volume Using 2D Lateral Area Measurements During Swallowing

Authors: Howell Henrian G. Bayona, Yoko Inamoto, Eichii Saitoh, Keiko Aihara, Masanao Kobayashi, Yohei Otaka

Published in: Dysphagia

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Abstract

This study evaluated the validity of pharyngeal 2D area measurements acquired from the lateral view for predicting the actual 3D volume in healthy adults during swallowing. Seventy-five healthy adults (39 females, 36 males; mean age 51.3 years) were examined using 320-row area detector computed tomography (320-ADCT). All participants swallowed a 10 mL honey-thick barium bolus upon command while seated in a 45° semi-reclining position. Multi-planar reconstruction images and dynamic 3D-CT images were obtained using Aquilion ONE software. Pharyngeal 2D area and 3D volume measurements were taken before swallowing and at the frame depicting maximum pharyngeal constriction. Pharyngeal volume before swallowing (PVhold) was accurately predicted by 2D area (R2 = 0.816). Adding height and sex to the model increased R2 to 0.836. Regarding pharyngeal volume during maximum constriction (PVmax), 2D area also exhibited acceptable predictive power (R2 = 0.777). However, analysis of statistical residuals and outliers revealed a greater tendency for prediction errors when there is less complete constriction of the pharynx as well as asymmetry in bolus flow or movement. Findings highlight the importance of routinely incorporating anterior–posterior views during VFSS exams. Future work is needed to determine clinical utility of pharyngeal volume measurements derived from 320-ADCT.
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Metadata
Title
Prediction of Pharyngeal 3D Volume Using 2D Lateral Area Measurements During Swallowing
Authors
Howell Henrian G. Bayona
Yoko Inamoto
Eichii Saitoh
Keiko Aihara
Masanao Kobayashi
Yohei Otaka
Publication date
21-01-2024
Publisher
Springer US
Published in
Dysphagia
Print ISSN: 0179-051X
Electronic ISSN: 1432-0460
DOI
https://doi.org/10.1007/s00455-023-10659-x