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The advantages of high-frame-rate videos in fiber endoscopic evaluation of swallowing.

(2016) Alizadeh Agdam, M.(Mehran)

Objectives: The purpose of this study was to verify whether or not high-frame-rate (HFR) videos were superior to standard-frame-rate (SFR) videos in the visual recognition of motion of the laryngopharyngeal structures during the pharyngeal phase of swallowing.
Method: Five healthy subjects were asked to swallow 0.5 ml water under fiberoptic transnasal laryngoscopy. The endoscope was connected to a high-speed digital imaging (HSDI) camera, which recorded the laryngopharyngeal view throughout the swallowing process at 4000 frames per second (fps). A total of five HFR videos were recorded, and were then copied and downsampled into a standard-frame-rate video version with 30 fps. Fifteen otorhinolaryngologists observed all ten HFR and SFR videos in random order, and rated the videos on a four-point rating scale reflecting the degree of the visual recognition of the rapid motions of the laryngopharyngeal structures just before the ‘white-out’ phenomenon.
Results: The number of observers judging the HFR videos with higher scores compared to the SFR videos was significantly higher for most laryngopharyngeal structures. These structures include: the posterior pharyngeal wall (p=0.001), the left lateral pharyngeal wall (p=0.015), the right lateral pharyngeal (p=0.035), the tongue base (p=0.005), and the epiglottis tilting (p=0.005). Only the recognition of laryngeal elevation (p=0.059) did not seem to benefit from a higher frame rate.
Conclusion: These results demonstrated the superiority of HFR videos compared to SFR videos in the evaluation of the contractive motions of the pharyngeal structures during the pharyngeal phase of swallowing.





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ID 3330
Moeder ID 3084
Volgorde Alizadeh Agdam, M.
Naam AlizadehAgdamM
Publiceren yes
OAI-naam Student_thesis
Path root/geneeskunde/2016/AlizadehAgdamM/
Gemaakt op: 2017-01-31 10:25:28
Gemodificeerd op: 2017-01-31 10:25:28
Digitaal ID 5890661214a11
Afstudeerrichting opleiding/afstudeerrichting 1
Studierichting Studierichting 1
Titel The advantages of high-frame-rate videos in fiber endoscopic evaluation of swallowing.
Ruilverkeer mogelijk no
Printen in opdracht no
Aantal pagina's 22
Publicatiejaar 2016
Taal en
Engelse samenvatting Objectives: The purpose of this study was to verify whether or not high-frame-rate (HFR) videos were superior to standard-frame-rate (SFR) videos in the visual recognition of motion of the laryngopharyngeal structures during the pharyngeal phase of swallowing.
Method: Five healthy subjects were asked to swallow 0.5 ml water under fiberoptic transnasal laryngoscopy. The endoscope was connected to a high-speed digital imaging (HSDI) camera, which recorded the laryngopharyngeal view throughout the swallowing process at 4000 frames per second (fps). A total of five HFR videos were recorded, and were then copied and downsampled into a standard-frame-rate video version with 30 fps. Fifteen otorhinolaryngologists observed all ten HFR and SFR videos in random order, and rated the videos on a four-point rating scale reflecting the degree of the visual recognition of the rapid motions of the laryngopharyngeal structures just before the ‘white-out’ phenomenon.
Results: The number of observers judging the HFR videos with higher scores compared to the SFR videos was significantly higher for most laryngopharyngeal structures. These structures include: the posterior pharyngeal wall (p=0.001), the left lateral pharyngeal wall (p=0.015), the right lateral pharyngeal (p=0.035), the tongue base (p=0.005), and the epiglottis tilting (p=0.005). Only the recognition of laryngeal elevation (p=0.059) did not seem to benefit from a higher frame rate.
Conclusion: These results demonstrated the superiority of HFR videos compared to SFR videos in the evaluation of the contractive motions of the pharyngeal structures during the pharyngeal phase of swallowing.
Nederlandse samenvatting Achtergrond: Fiberscopische analyse van de slikactie (FEES) beelden worden gewoonlijk opgenomen in een standaard beeldsnelheid (SFR) met 30 frames per seconden (fps). Het doel van deze studie is om de toegevoegde waarden van een hogere beeldsnelheid (HFR) te meten in de beoordeling van de faryngeale contracties van de slikbeweging.
Methode: Bij vijf gezonde vrijwilligers werden fiberendoscopische opnames gemaakt van de slikbeweging. Deze video’s worden opgeslagen in 4000 fps en geconverteerd naar een 30 fps versie. Vijftien KNO-artsen analyseerden alle tien video’s in willekeurige volgorde. Door middel van een vragenlijst werd de visuele herkenning van de beweging van verschillende faryngeale structuren tijdens een slikbeweging beoordeeld op een vier-punts schaal.
Resultaten: In bijna alle gevallen werd een significant verschil gevonden gevonden tussen de beoordelingen voor de anatomische structuren in de 30 fps en 4000 fps videoversies. Met uitzondering van de laryngeale elevatie (p=0.059), werd er een significant hogere score gevonden tussen de scores betreffende faryngeale achterwand contractie (p=0.001), linker laterale faryngeale wand contractie (p=0.015), rechter laterale wand contractie (p=0.035), tong retractie (p=0.005), uvula-retractie (p=0.016) en laryngeale vestibulum-afsluiting door de epiglottis (p=0.005).
Conclusie: De herkenning van de beweging van faryngeale structuren wordt significant beter beoordeeld in HFR-videos in vergelijking met SFR-videos.
Onderwijsinstelling Medical Sciences
Type embargo abstract openbaar, scriptie op aanvraag
Auteur(s) Alizadeh Agdam, M.(Mehran)
UMCG begeleider(s) Supervisor Groningen, Netherlands; Dikkers, Dr. F.G. MD, PhD; University of Groningen; Department of Otorhinolaryngology-Head and Neck Surgery,
Begeleider(s) opleidingsinstelling Supervisor Osaka, Japan; Ogawa, Dr. M. MD, PhD; Department of Otorhinolaryngology-Head and Neck Surgery; Osaka University Graduate School of Medicine, Osaka Universi
Auteur(s) Alizadeh Agdam, M.(Mehran)
UMCG begeleider(s) Supervisor Groningen, Netherlands; Dikkers, Dr. F.G. MD, PhD; University of Groningen; Department of Otorhinolaryngology-Head and Neck Surgery,


 
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