Noninvasive Bolus Transit Detection in Cervical Esophagus Utilizing Ultrasound Characteristics

This pilot study aims to identify characteristic A-mode ultrasound features relevant to noninvasive detection of esophageal bolus transit in the proximal esophagus. Ultrasound signals at a lateral neck site were obtained via a single-element ultrasonic transducer with synchronous videofluoroscopic s...

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Bibliographic Details
Published inOtolaryngology-head and neck surgery Vol. 171; no. 3; p. 919
Main Authors Wilcox, Andrew S, Jackson, William D, Heller-Stark, Amanda C, Lanza, Elizabeth L, Ellerston, Julia K
Format Journal Article
LanguageEnglish
Published England 01.09.2024
Subjects
Adult
Aged
Deglutition - physiology
Deglutition Disorders - diagnostic imaging
Deglutition Disorders - physiopathology
Esophagus - diagnostic imaging
Esophagus - physiopathology
Female
Fluoroscopy
Humans
Male
Middle Aged
Pilot Projects
Ultrasonography
swallow
chronic cough
noninvasive
laryngopharyngeal reflux
dysphagia
A‐mode
postnasal drip
ultrasound
LPR
globus sensation
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Summary:This pilot study aims to identify characteristic A-mode ultrasound features relevant to noninvasive detection of esophageal bolus transit in the proximal esophagus. Ultrasound signals at a lateral neck site were obtained via a single-element ultrasonic transducer with synchronous videofluoroscopic swallowing studies images of swallows of differing viscosities in 21 adult dysphagia outpatients. Characteristic ultrasound features were extracted to differentiate a bolus-filled from a collapsed esophagus. From 21 subjects, 412 swallows exhibited 4 reproducible waveform patterns associated with bolus transit as displayed in a heatmap: (1) Strong Reflectors; (2) Echo Shifts; (3) Distal Acoustic Enhancement; and (4) Speckling: One or more of these features were observed in the swallow series for all 21 subjects. Distinct acoustic waveform features acquired by single-element ultrasonic transducers can identify bolus transit through the cervical esophagus.
ISSN:1097-6817
DOI:10.1002/ohn.746