The Influence of Perspective on Perception: Assessing Residue Across Planes of Videofluoroscopy

• Published in: The Laryngoscope 2024-11
• Main Authors: Jones-Rastelli, R Brynn, Crossman, Claire, Price, D'manda, Stal, Frederick, Molfenter, Sonja
• Format: Article
• Language: English
• ISSN: 0023-852X; 1531-4995; 1531-4995
• DOI: 10.1002/lary.31873

(1) To determine whether perception of pharyngeal residue severity differs by view plane on videofluoroscopy. (2) To explore whether the Bolus Clearance Ratio (BCR) can be reliably applied in the anterior-posterior (AP) plane. (3) To investigate the relationship between perception of residue severity and BCR measures across view planes. Images of the same bolus condition in lateral and AP were rated using a simple 5-point ordinal descriptive scale (none, trace, mild, moderate, severe) by 225 speech-language pathologists via electronic survey. BCR measures were obtained for the same set of images from four trained raters. Wilcoxon signed-rank tests and cumulative mixed modeling were used to compare ratings by plane. BCR reliability was calculated using intraclass correlation coefficients. Perceptual ratings were compared with BCR measures using Spearman correlations. (1) Perception of residue severity was not consistent across plane in 9/10 image pairs (p