Abstract
Stroboscopy and kymography have been used to examine the motional abnormality of vocal folds and to visualise their regional vibratory pattern. In a previous study (Laryngoscope, 1999), we introduced the conceptual idea of videostrobokymography, in which we applied the concept of kymography on the prerecorded video images using stroboscopy, and showed its possible clinical application to various disorders in vocal folds. However, a more detailed description about the software and the mathematical formulation used in this system is needed for the reproduction of similar systems. The composition of hardwares, user-interface and detail procedures including mathematical equations in videostrobokymography software is presented in this study. As an initial clinical trial, videostrobokymography was applied to the preoperative and postoperative videostroboscopic images of 15 patients with Reinke's edema. On preoperative examination, videostrobokymograms showed irregular pattern of mucosal wave and, in some patients, a relatively constant glottic gap during phonation. After the operation, the voice quality of all patients was improved in acoustic and aerodynamic assessments, and videostrobokymography showed clearly improved mucosal waves (change in open quotient: mean±SD=0.11±0.05).
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References
Ballard, D. H., andBrown, C. M. (1982): ‘Computer vision’ (Prentice-Hall, Englewood Cliffs, NJ), pp. 254–261
Blitzer, A., Brin, M. F., Sasaki, C. T., Fahn, S., andHarris, K. S. (1992): ‘Neurologic disorders of the larynx’ (Tieme Medical Publishers, New York)
Fujimura, O. (1988): ‘Vocal physiology: voice production, mechanisms and functions’ (Raven Press, New York), pp. 225–345
Gall, V., andHanson, J. (1973): ‘Bestimmung physikalischer Parameter der Stimmlippenschwingungen mit Hilfe der Larynxphotokymographie’,Folia Phoniartr (Basel),25, pp. 450–459
Gauffin, J., andHammarberg, B. (1991): ‘Vocal fold physiology. Acoustic, perceptual, and physiological aspects of voice mechanism’, (Singular Publishing Group, San Diego), pp. 213–216
Gross, M. (1985): ‘Larynxfotokymographie’,Sprache-Stimme-Gehör,9, pp. 112–113
Hirano, M., andBless, D. (1993): ‘Videostroboscopic examination of the larynx’ (Singular Publishing Group, San Diego), pp. 23–24
Karnell, M. P. (1989): ‘Synchronized videostroboscopy and electroglottography’,J. Vioce,3, pp. 68–75
Isogai, Y. (1994): ‘Laryngostrobography by the newly developed strobo-motion analyzer’,Larynx Japan,6, pp. 91–96
Isogai, Y. (1996): ‘Laryngostroboscopy-observation of the traveling wave of the mucous membrane’,Larynx Japan,8, pp. 84–91
Sung, M.-W., Kim, K. H., Koh, T.-Y., Kwon, T.-Y., Mo, J.-H., Choi, S.-H., Lee, J. S., Park, K. S., Kim, E. J., andSung, M. Y. (1999): Videostrobokymography: a new method for the quantitative analysis of vocal fold vibration’,Laryngoscope,109, pp. 1859–1863
Švec, J. G., andSchutte, H. K. (1996): ‘Videokymography: highspeed line scanning of vocal fold vibration’,J. Voice,10, pp. 201–205
Trapp, T. K., andBerke, G. S. (1988): ‘Photoelectric measurement of laryngeal paralyses correlated with videostroboscopy’,Laryngoscope,98, pp. 486–492
Wendler, J., Köppen, K., andFischer, S. (1986): ‘Validity of stroboscopic data in terms of quantitative measures’, Proc. Int. Conf. Voice, pp. 36–43
Woo, P. (1996): “Quantification of videostrobolaryngoscopic findings — measurements of the normal glottal cycle’,Laryngoscope,106, pp. 1–27
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Lee, J.S., Kim, E., Sung, M.W. et al. A method for assessing the regional vibratory pattern of vocal folds by analysing the video recording of stroboscopy. Med. Biol. Eng. Comput. 39, 273–278 (2001). https://doi.org/10.1007/BF02345279
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DOI: https://doi.org/10.1007/BF02345279