Wang, Soo-Geun
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Lee, Byung-Joo
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Lee, Jin-Choon
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Lim, Yun-Sung
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Park, Young Min
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Park, Hee-June
(Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University)
,
Roh, Jung-Hoon
(Department)
,
Jeon, Gye-Rok
,
Kwon, Soon-Bok
,
Shin, Bum-Joo
Objectives : We developed two-dimensional (2D) scanning videokyomography to evaluate the mucosal wave of whole vocal cords in real time to overcome the limit of preexisting stroboscopy and line scanning videokymography which could not evaluate it. Methods : We implemented a continuous light source w...
Objectives : We developed two-dimensional (2D) scanning videokyomography to evaluate the mucosal wave of whole vocal cords in real time to overcome the limit of preexisting stroboscopy and line scanning videokymography which could not evaluate it. Methods : We implemented a continuous light source with high brightness, a high-definition CMOS camera, and capture board for saving the data. We created the software program to analyze the image data from the system. The test of the functionality of the 2D scanning videokymography camera was performed in one of the authors (P.H.J 32 years old male). Vocal cord images were obtained during normal phonation and falsetto phonation. Images were obtained also during cough, diplophonia. Results : The system made it possible to measure objective parameters, including fundamental frequency, amplitude, regularity, mucosal wave, and phase difference, medial and lateral peak, opening versus closing duration related to vocal fold vibration. Simultaneously, it enabled analysis of the whole mucosal wave of the entire vocal fold in real time. 2D scanning videokymography was also effective for evaluating the dynamic status of the vocal fold when the subject phonated aperiodic voice. Conclusion : In conclusion, 2D scanning videokymography can support the analysis of the whole mucosal wave of the entire vocal cord with objective vocal parameters, overcoming the limitations of stroboscopy and previous line scanning videokymography techniques.
Objectives : We developed two-dimensional (2D) scanning videokyomography to evaluate the mucosal wave of whole vocal cords in real time to overcome the limit of preexisting stroboscopy and line scanning videokymography which could not evaluate it. Methods : We implemented a continuous light source with high brightness, a high-definition CMOS camera, and capture board for saving the data. We created the software program to analyze the image data from the system. The test of the functionality of the 2D scanning videokymography camera was performed in one of the authors (P.H.J 32 years old male). Vocal cord images were obtained during normal phonation and falsetto phonation. Images were obtained also during cough, diplophonia. Results : The system made it possible to measure objective parameters, including fundamental frequency, amplitude, regularity, mucosal wave, and phase difference, medial and lateral peak, opening versus closing duration related to vocal fold vibration. Simultaneously, it enabled analysis of the whole mucosal wave of the entire vocal fold in real time. 2D scanning videokymography was also effective for evaluating the dynamic status of the vocal fold when the subject phonated aperiodic voice. Conclusion : In conclusion, 2D scanning videokymography can support the analysis of the whole mucosal wave of the entire vocal cord with objective vocal parameters, overcoming the limitations of stroboscopy and previous line scanning videokymography techniques.
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가설 설정
5. A : Symmetry of amplitude and phase could be evaluated through dynamic 2D scanning videokymography images. Despite a little difference of phase, it was easy to be found in the 2D canning VKG.
제안 방법
The mucosal wave of the entire vocal fold could be evaluated in real time. Because the 2D scanning VKG showed the dynamic images of the whole vocal fold in temporally different lines, it was better to evaluate the mucosal wave of the vocal fold.
The system was designed to be able to record the image at full HD (1,920×1,080 pixels) with 30 frames per second. In the study, we used a modified full HD CMOS camera system with a rolling shutter image sensor to invent a new videokymography system. This image sensor captures image lines of the entire frame sequentially from the superior to the inferior portion.
In this study, 2D scanning videokymography was developed to evaluate the whole mucosal wave of the entire vocal fold. Various parameters (absence of vibration of vocal fold, duration of glottal closure, left-right asymmetry, shape of lateral peaks, laterally traveling mucosal wave, opening versus closing duration, shape of medial peak, cycle aberrations etc.
In this study, we used a modified full HD CMOS camera system with a rolling shutter image sensor to invent a new videokymography system. This image sensor captures image lines of the entire frame sequentially from the superior to the inferior portion.
대상 데이터
The test of the functionality of the 2D scanning videokymography camera was performed in one of the authors (P.H.J 32 years old male). Vocal cord vibrations images were obtained during normal phonation and falsetto phonation.
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