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Spatiotemporal vibratory dynamics of vocal fold scar using high-speed digital imaging

Spatiotemporal vibratory dynamics of vocal fold scar using high-speed digital imaging

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  • Author(s): Y. Zhang 1 ; J.J. Jiang 2 ; A. Appel 2
    • View affiliations
    • Affiliations: 1: Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, College of Oceanography and Environmental Science, Xiamen University, Xiamen, People's Republic of China
      2: Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, Madison, USA
  • Source: Volume 46, Issue 7, 1 April 2010, p. 483 – 484
    DOI:  10.1049/el.2010.2989 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Published

A new application of high-speed imaging to measure spatiotemporal vibratory behaviours of a vocal fold scar is investigated in excised larynx experiments. Eigenmode analysis reveals that pathologically scarred vocal folds produce spatiotemporal asymmetry and spread energy across high-order eigenmodes. The global entropy of scarred vocal folds is statistically higher than the normal vocal folds. This study suggests that spatiotemporal analysis may provide a valuable tool for describing the spatiotemporal dynamics of vocal fold scars.

Inspec keywords: medical image processing

Other keywords: excised larynx experiments; spatiotemporal vibratory dynamics; high-speed digital imaging; vocal fold scar; spatiotemporal asymmetry; eigenmode analysis

Subjects: Computer vision and image processing techniques; Biology and medical computing; Biomedical measurement and imaging; Optical, image and video signal processing; Medical and biomedical uses of fields, radiations, and radioactivity; health physics; Patient diagnostic methods and instrumentation

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