Influence of Analyzed Sequence Length on Parameters in Laryngeal High-Speed Videoendoscopy

dc.contributor.authorSchlegel, Patrick
dc.contributor.authorSemmler, Marion
dc.contributor.authorKunduk, Melda
dc.contributor.authorDöllinger, Michael
dc.contributor.authorBohr, Christopher
dc.contributor.authorSchützenberger, Anne
dc.date.accessioned2019-08-14
dc.date.available2023-10-09T15:22:07Z
dc.date.created2018
dc.date.issued2019-08-14
dc.description.abstractLaryngeal high-speed videoendoscopy (HSV) allows objective quantification of vocal fold vibratory characteristics. However, it is unknown how the analyzed sequence length affects some of the computed parameters. To examine if varying sequence lengths influence parameter calculation, 20 HSV recordings of healthy females during sustained phonation were investigated. The clinical prevalent Photron Fastcam MC2 camera with a frame rate of 4000 fps and a spatial resolution of 512 × 256 pixels was used to collect HSV data. The glottal area waveform (GAW), describing the increase and decrease of the area between the vocal folds during phonation, was extracted. Based on the GAW, 16 perturbation parameters were computed for sequences of 5, 10, 20, 50 and 100 consecutive cycles. Statistical analysis was performed using SPSS Statistics, version 21. Only three parameters (18.8%) were statistically significantly influenced by changing sequence lengths. Of these parameters, one changed until 10 cycles were reached, one until 20 cycles were reached and one, namely Amplitude Variability Index (AVI), changed between almost all groups of different sequence lengths. Moreover, visually observable, but not statistically significant, changes within parameters were observed. These changes were often most prominent between shorter sequence lengths. Hence, we suggest using a minimum sequence length of at least 20 cycles and discarding the parameter AVI.en
dc.identifier.citationApplied Sciences 8.12 (2018). <https://www.mdpi.com/2076-3417/8/12/2666>
dc.identifier.doihttps://doi.org/10.3390/app8122666
dc.identifier.opus-id11448
dc.identifier.urihttps://open.fau.de/handle/openfau/11448
dc.identifier.urnurn:nbn:de:bvb:29-opus4-114482
dc.language.isoen
dc.publisherMDPI
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.de
dc.subjecthigh-speed videoendoscopy
dc.subjectglottal area waveform
dc.subjectsequence length
dc.subjectparameters
dc.subjectdiagnosis
dc.subject.ddcDDC Classification::6 Technik, Medizin, angewandte Wissenschaften :: 61 Medizin und Gesundheit :: 610 Medizin und Gesundheit
dc.titleInfluence of Analyzed Sequence Length on Parameters in Laryngeal High-Speed Videoendoscopyen
dc.typearticle
dcterms.publisherFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
local.date.prevpublished2018-12-18
local.journal.issue12
local.journal.titleApplied Sciences
local.journal.volume8
local.sendToDnbfree*
local.subject.fakultaetMedizinische Fakultät
local.subject.importimport
local.subject.sammlungUniversität Erlangen-Nürnberg / Eingespielte Open Access Artikel / Eingespielte Open Access Artikel 2019
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