title: The First Application of the Two-Dimensional Scanning Videokymography in Excised Canine Larynx Model.
abstract: OBJECTIVE
  Evaluation of the vibratory pattern of vocal folds is of paramount importance to diagnose vocal fold disorders. Currently, laryngeal videokymography (VKG) and digital kymography from high-speed videolaryngoscopy are the available techniques for studying aperiodic vibrations of vocal folds. But VKG has the fundamental limitation that only linear portion of the vocal fold mucosa can be visualized. Digital kymography has the disadvantages of no immediate feedback during examination, considerable waiting time before kymographic visualization, recoding duration limited to seconds, and extreme demands on storage space. We developed a new system--two-dimensional (2D) scanning VKG--for evaluation of the vibratory pattern of vocal folds, and the method provided a possible alternative with its advantages and disadvantages. Thus, we aimed to evaluate the feasibility of the new device for the vocal fold vibration in excised canine larynx model.
  
  
  METHODS
  The vibrating pattern for vocal folds was evaluated using high-speed videolaryngoscopic and 2D scanning videokymographic system in the excised canine larynx model.
  
  
  RESULTS
  The images of canine vocal folds were captured with high-speed videolaryngoscopic system and converted to the kymographic images using the software. The kymographic image acquired by 2D scanning VKG was comparable with multi-line digital kymography at multiple locations.
  
  
  CONCLUSIONS
  The vocal fold vibration could be evaluated in the excised canine larynx model using 2D scanning VKG. And this new device is expected to be a promising tool to evaluate the vocal fold vibration for clinical practice and voice research.
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea.
authors: Soo-Geun
authors: SG
authors: Wang
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea.
authors: Hee-June
authors: HJ
authors: Park
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea.
authors: Jae Keun
authors: JK
authors: Cho
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea.
authors: Jeon Yeob
authors: JY
authors: Jang
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Yangsan Hospital, Yangsan, Kyeongnam, Republic of Korea.
authors: Won Yong
authors: WY
authors: Lee
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea.
authors: Byung-Joo
authors: BJ
authors: Lee
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Yangsan Hospital, Yangsan, Kyeongnam, Republic of Korea.
authors: Jin-Choon
authors: JC
authors: Lee
authors: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Republic of Korea. Electronic address: Cha.Wonjae@gmail.com.
authors: Wonjae
authors: W
authors: Cha
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D004285:Dogs; D004867:Equipment Design; D005240:Feasibility Studies; D007091:Image Processing, Computer-Assisted; D007734:Kymography / Q000295:instrumentation / Q000379:methods*; D007830:Larynx / Q000033:anatomy & histology / Q000502:physiology* / Q000601:surgery; D008297:Male; D023421:Models, Animal; D010699:Phonation; D013997:Time Factors; D014732:Vibration; D014741:Video Recording / Q000295:instrumentation; D014827:Vocal Cords / Q000033:anatomy & histology / Q000502:physiology* / Q000601:surgery
keywords: Canine larynx; High-speed video system; Vibration; Videokymography; Vocal fold