Research Papers

New laryngoscope for quantitative high-speed imaging of human vocal folds vibration in the horizontal and vertical direction

[+] Author Affiliations
Nibu A. George, Frits F. M. de Mul, Qingjun Qiu, Gerhard Rakhorst, Harm K. Schutte

University Medical Centre Groningen and University of Groningen, Groningen Voice Research Lab, Department of Biomedical Engineering, 9700 AD Groningen, The Netherlands

J. Biomed. Opt. 13(6), 064024 (December 11, 2008). doi:10.1117/1.3041164
History: Received February 26, 2008; Revised October 06, 2008; Accepted October 08, 2008; Published December 11, 2008
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We report the design of a novel laser line-triangulation laryngoscope for the quantitative visualization of the three-dimensional movements of human vocal folds during phonation. This is the first successful in vivo recording of the three-dimensional movements of human vocal folds in absolute values. Triangulation images of the vocal folds are recorded at the rate of 4000fps with a resolution of 256×256pixels. A special image-processing algorithm is developed to precisely follow the subpixel movements of the laser line image. Vibration profiles in both horizontal and vertical directions are calibrated and measured in absolute SI units with a resolution of ±50μm. We also present a movie showing the vocal folds dynamics in vertical cross section.

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© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Nibu A. George ; Frits F. M. de Mul ; Qingjun Qiu ; Gerhard Rakhorst and Harm K. Schutte
"New laryngoscope for quantitative high-speed imaging of human vocal folds vibration in the horizontal and vertical direction", J. Biomed. Opt. 13(6), 064024 (December 11, 2008). ; http://dx.doi.org/10.1117/1.3041164


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Calibration of high-speed imaging by laser triangulation. Logoped Phoniatr Vocol 2004;29(4):154-61.
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