Flexible Fiber-Optic High-Speed Imaging of Vocal Fold Vibration: A Preliminary Report.
Summary Objective High-speed video (HSV) imaging of vocal fold vibration has been possible only through the rigid endoscope. This study reports that a fiberscope-based high-speed imaging system may allow HSV imaging of naturalistic voicing. Materials and methods Twenty-two subjects were recorded usi...
| Publicado en: | Journal of Voice Vol. 31; no. 2; pp. 175 - 182 |
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| Autores principales: | , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Mar2017
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=121912719&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121912719 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08921997 H24 jtl: Journal of Voice issn: 08921997 maglogo: N pubinfo: dt: Mar2017 vid: 31 iid: 2 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 121912719 121912719 121912719 10.1016/j.jvoice.2016.07.015 121912719 ppf: 175 ppct: 7 formats: tig: atl: Flexible Fiber-Optic High-Speed Imaging of Vocal Fold Vibration: A Preliminary Report. aug: au: Woo, Peak Baxter, Peter affil: Department of Otolaryngology Head and Neck Surgery, Icahn School of Medicine, New York, New York sug: subj: Vibration Evaluation Vocal Cords Analysis Fiber Optics Human Image Enhancement Kymography Laryngoscopy Methods Videorecording Voice Endoscopes Phonation Software Waveforms ab: Summary Objective High-speed video (HSV) imaging of vocal fold vibration has been possible only through the rigid endoscope. This study reports that a fiberscope-based high-speed imaging system may allow HSV imaging of naturalistic voicing. Materials and methods Twenty-two subjects were recorded using a commercially available black and white high-speed camera (Photron Motion Tools, 256 × 120 pixel, 2000 frames per second, 8 second acquisition time). The camera gain is set to +6 db. The camera is coupled to a standard fiber-optic laryngoscope (Olympus ENF P-4) with a 300-W Xenon light. Image acquisition was done by asking the subject to perform repeated phonation at modal phonation. Video images were processed using commercial video editing and video noise reduction software ( After effects , Magix , and Neat Video 4.1 ). After video processing, the video images were analyzed using digital kymography (DKG). Results The HSV black and white video acquired by the camera is gray and lacks contrast. By adjustment of image contrast, brightness, and gamma and using noise reduction software, the flexible laryngoscopy image can be converted to video image files suitable for DKG and waveform analysis. The increased noise still makes edge tracking for objective analysis difficult, but subjective analysis of DKG plot is possible. Conclusions This is the first report of HSV acquisition in an unsedated patient using a fiberscope. Image enhancement and noise reduction can enhance the HSV to allow extraction of the digital kymogram. Further image enhancement may allow for objective analysis of the vibratory waveform. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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