title: A new videokymography system for evaluation of the vibration pattern of entire vocal folds.
abstract: OBJECTIVE
  To overcome the limitations of previous videokymography methods, we developed a new videokymography system for the evaluation of the whole mucosal wave of the entire vocal cord mucous membrane.
  
  
  METHODS
  To confirm the usefulness of the new videokymography system, we performed videokymography to evaluate the mucosal wave of the vocal folds during modal and falsetto phonation in normal adult males. Additionally, we serially performed both laryngeal videostroboscopy and the new videokymography method in patients diagnosed with acute ulcerative laryngitis.
  
  
  RESULTS
  Using the new videokymography system, the mucosal wave pattern of entire vocal folds was captured during the examination. The opening and closing durations could be differentiated, and the symmetry of amplitude and phase could be assessed. The shape of the medial and lateral peaks could be assessed. In patients with acute laryngitis, the new videokymography system showed an enhanced ability to evaluate the flexibility of the vocal folds.
  
  
  CONCLUSIONS
  The new videokymography system enables recording of the whole mucosal wave pattern of entire vocal folds. Although further studies are required to confirm its clinical efficacy for the evaluation of vocal folds, the system can be applied to evaluate the static and dynamic status of vocal folds in patients with vocal cord diseases.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Busan, Republic of Korea.
authors.forename: Soo-Geun
authors.initials: SG
authors.lastname: Wang
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Busan, Republic of Korea.
authors.forename: Hee-June
authors.initials: HJ
authors.lastname: Park
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University School of Medicine and Biomedical Research Institute, Busan, Republic of Korea.
authors.forename: Byung-Joo
authors.initials: BJ
authors.lastname: Lee
authors.affiliation: Lee Sung Mo Internal Medicine Clinic, Busan, Republic of Korea.
authors.forename: Sung-Mo
authors.initials: SM
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Bundang Jesaeng Hospital, Deajin Medical Center, Seongnam, Gyeonggi, Republic of Korea.
authors.forename: Bumjun
authors.initials: B
authors.lastname: Ko
authors.affiliation: Department of Otorhinolaryngology, Bundang Jesaeng Hospital, Deajin Medical Center, Seongnam, Gyeonggi, Republic of Korea.
authors.forename: Sang Min
authors.initials: SM
authors.lastname: Lee
authors.affiliation: Department of Otorhinolaryngology, Bundang Jesaeng Hospital, Deajin Medical Center, Seongnam, Gyeonggi, Republic of Korea. Electronic address: autumnfe@daum.net.
authors.forename: Young Min
authors.initials: YM
authors.lastname: Park
mesh_terms: D000328:Adult; D055154:Dysphonia / Q000175:diagnosis*; D006801:Humans; D007734:Kymography / Q000379:methods*; D007818:Laryngeal Diseases / Q000175:diagnosis; D007827:Laryngitis / Q000175:diagnosis*; D008297:Male; D049489:Stroboscopy; D014741:Video Recording; D014827:Vocal Cords
keywords: Vibration; Videokymography; Vocal cord