Image-based measurement of post-swallow residue

The normalized residue ratio scale

William G. Pearson, Sonja Molfenter, Zachary M. Smith, Catriona M. Steele

Research output: Contribution to journalArticle

Abstract

Post-swallow residue is considered a sign of swallowing impairment. Existing methods for capturing post-swallow residue (perceptual and quantitative) have inherent limitations. We employed several different perceptual and quantitative (ratio) methods for measuring post-swallow residue on the same 40 swallows and addressed the following questions: (1) Do perceptual and quantitative methods demonstrate good agreement? (2) What differences in precision are apparent by measurement method (one-dimensional, two-dimensional, and circumscribed area ratios)? (3) Do residue ratios agree strongly with residue area measures that are anatomically normalized? Based on the findings of this series of questions, a new method for capturing residue is proposed: the Normalized Residue Ratio Scale (NRRS). The NRRS is a continuous measurement that incorporates both the ratio of residue relative to the available pharyngeal space and the residue proportionate to the size of the individual. A demonstration of this method is presented to illustrate the added precision of the NRRS measurement in comparison to other approaches for measuring residue severity.

Original languageEnglish (US)
Pages (from-to)167-177
Number of pages11
JournalDysphagia
Volume28
Issue number2
DOIs
StatePublished - Jun 2013

Fingerprint

Swallows
Deglutition

Keywords

  • Deglutition
  • Deglutition disorders
  • Dysphagia
  • Residue
  • Swallowing
  • Videofluoroscopy

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Gastroenterology
  • Speech and Hearing

Cite this

Image-based measurement of post-swallow residue : The normalized residue ratio scale. / Pearson, William G.; Molfenter, Sonja; Smith, Zachary M.; Steele, Catriona M.

In: Dysphagia, Vol. 28, No. 2, 06.2013, p. 167-177.

Research output: Contribution to journalArticle

Pearson, William G. ; Molfenter, Sonja ; Smith, Zachary M. ; Steele, Catriona M. / Image-based measurement of post-swallow residue : The normalized residue ratio scale. In: Dysphagia. 2013 ; Vol. 28, No. 2. pp. 167-177.
@article{ae31a51f40694b2e926dda9908914d4b,
title = "Image-based measurement of post-swallow residue: The normalized residue ratio scale",
abstract = "Post-swallow residue is considered a sign of swallowing impairment. Existing methods for capturing post-swallow residue (perceptual and quantitative) have inherent limitations. We employed several different perceptual and quantitative (ratio) methods for measuring post-swallow residue on the same 40 swallows and addressed the following questions: (1) Do perceptual and quantitative methods demonstrate good agreement? (2) What differences in precision are apparent by measurement method (one-dimensional, two-dimensional, and circumscribed area ratios)? (3) Do residue ratios agree strongly with residue area measures that are anatomically normalized? Based on the findings of this series of questions, a new method for capturing residue is proposed: the Normalized Residue Ratio Scale (NRRS). The NRRS is a continuous measurement that incorporates both the ratio of residue relative to the available pharyngeal space and the residue proportionate to the size of the individual. A demonstration of this method is presented to illustrate the added precision of the NRRS measurement in comparison to other approaches for measuring residue severity.",
keywords = "Deglutition, Deglutition disorders, Dysphagia, Residue, Swallowing, Videofluoroscopy",
author = "Pearson, {William G.} and Sonja Molfenter and Smith, {Zachary M.} and Steele, {Catriona M.}",
year = "2013",
month = "6",
doi = "10.1007/s00455-012-9426-9",
language = "English (US)",
volume = "28",
pages = "167--177",
journal = "Dysphagia",
issn = "0179-051X",
publisher = "Springer New York",
number = "2",

}

TY - JOUR

T1 - Image-based measurement of post-swallow residue

T2 - The normalized residue ratio scale

AU - Pearson, William G.

AU - Molfenter, Sonja

AU - Smith, Zachary M.

AU - Steele, Catriona M.

PY - 2013/6

Y1 - 2013/6

N2 - Post-swallow residue is considered a sign of swallowing impairment. Existing methods for capturing post-swallow residue (perceptual and quantitative) have inherent limitations. We employed several different perceptual and quantitative (ratio) methods for measuring post-swallow residue on the same 40 swallows and addressed the following questions: (1) Do perceptual and quantitative methods demonstrate good agreement? (2) What differences in precision are apparent by measurement method (one-dimensional, two-dimensional, and circumscribed area ratios)? (3) Do residue ratios agree strongly with residue area measures that are anatomically normalized? Based on the findings of this series of questions, a new method for capturing residue is proposed: the Normalized Residue Ratio Scale (NRRS). The NRRS is a continuous measurement that incorporates both the ratio of residue relative to the available pharyngeal space and the residue proportionate to the size of the individual. A demonstration of this method is presented to illustrate the added precision of the NRRS measurement in comparison to other approaches for measuring residue severity.

AB - Post-swallow residue is considered a sign of swallowing impairment. Existing methods for capturing post-swallow residue (perceptual and quantitative) have inherent limitations. We employed several different perceptual and quantitative (ratio) methods for measuring post-swallow residue on the same 40 swallows and addressed the following questions: (1) Do perceptual and quantitative methods demonstrate good agreement? (2) What differences in precision are apparent by measurement method (one-dimensional, two-dimensional, and circumscribed area ratios)? (3) Do residue ratios agree strongly with residue area measures that are anatomically normalized? Based on the findings of this series of questions, a new method for capturing residue is proposed: the Normalized Residue Ratio Scale (NRRS). The NRRS is a continuous measurement that incorporates both the ratio of residue relative to the available pharyngeal space and the residue proportionate to the size of the individual. A demonstration of this method is presented to illustrate the added precision of the NRRS measurement in comparison to other approaches for measuring residue severity.

KW - Deglutition

KW - Deglutition disorders

KW - Dysphagia

KW - Residue

KW - Swallowing

KW - Videofluoroscopy

UR - http://www.scopus.com/inward/record.url?scp=84878791982&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878791982&partnerID=8YFLogxK

U2 - 10.1007/s00455-012-9426-9

DO - 10.1007/s00455-012-9426-9

M3 - Article

VL - 28

SP - 167

EP - 177

JO - Dysphagia

JF - Dysphagia

SN - 0179-051X

IS - 2

ER -