title: Vocal Fold Vibration Following Surgical Intervention in Three Vocal Pathologies: A Preliminary Study.
abstract: High-speed videoendoscopy captures the cycle-to-cycle vibratory motion of each individual vocal fold in normal and severely disordered phonation. Therefore, it provides a direct method to examine the specific vibratory changes following vocal fold surgery. The purpose of this study was to examine the vocal fold vibratory pattern changes in the surgically treated pathologic vocal fold and the contralateral vocal fold in three vocal pathologies: vocal polyp (n = 3), paresis or paralysis (n = 3), and scar (n = 3). Digital kymography was used to extract high-speed kymographic vocal fold images at the mid-membranous region of the vocal fold. Spectral analysis was subsequently applied to the digital kymography to quantify the cycle-to-cycle movements of each vocal fold, expressed as a spectrum. Surgical modification resulted in significantly improved spectral power of the treated pathologic vocal fold. Furthermore, the contralateral vocal fold also presented with improved spectral power irrespective of vocal pathology. In comparison with normal vocal fold spectrum, postsurgical vocal fold vibrations continued to demonstrate decreased vibratory amplitude in both vocal folds.
authors.affiliation: Department of Otorhinolaryngology, Mayo Clinic, Phoenix, Arizona. Electronic address: chen.wen@mayo.edu.
authors.forename: Wenli
authors.initials: W
authors.lastname: Chen
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Icahn School of Medicine, New York, New York.
authors.forename: Peak
authors.initials: P
authors.lastname: Woo
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Loma Linda University, Loma Linda, California.
authors.forename: Thomas
authors.initials: T
authors.lastname: Murry
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D016022:Case-Control Studies; D002921:Cicatrix / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007734:Kymography; D007818:Laryngeal Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D007828:Laryngoscopy; D008297:Male; D008875:Middle Aged; D010699:Phonation; D011127:Polyps / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D000074286:Preliminary Data; D020127:Recovery of Function; D013997:Time Factors; D016896:Treatment Outcome; D014732:Vibration; D014741:Video Recording; D014826:Vocal Cord Paralysis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D014827:Vocal Cords / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*
keywords: Digital kymography; High-speed videoendoscopy; Laryngeal surgery; Vocal fold vibration; Vocal fold vibratory spectrum