title: Real-time laryngoscopic measurements of vocal-fold vibrations.
abstract: We have developed a high-frame-rate laryngoscope that can measure the vibration distribution of a human vocal fold in real time at hundreds of hertz. Our laryngoscope can extract a vocal-fold contour at 4000 fps as 20 pairs of its left and right border points from 256 × 512-pixel images to quantify left-right asymmetry of vocal-fold vibrations. Experiments on artificial vocal-fold-like vibrations of a silicon rubber membrane were performed to confirm the laryngoscope's effectiveness, and the vocal folds of human subjects, including patients with laryngeal diseases, were examined under clinical conditions.
authors.affiliation: Graduate School of Engineering,Hiroshima University, Hiroshima 739-8527, Japan. iishii@robotics.hiroshima-u.ac.jp
authors.forename: Idaku
authors.initials: I
authors.lastname: Ishii
authors.forename: Shoichi
authors.initials: S
authors.lastname: Takemoto
authors.forename: Takeshi
authors.initials: T
authors.lastname: Takaki
authors.forename: Muneo
authors.initials: M
authors.lastname: Takamoto
authors.forename: Kentaro
authors.initials: K
authors.lastname: Imon
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Hirakawa
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D006801:Humans; D020704:Laryngoscopes; D007828:Laryngoscopy / Q000379:methods*; D015233:Models, Statistical; D009092:Mucous Membrane / Q000473:pathology; D011127:Polyps / Q000473:pathology; D012825:Silicon / Q000737:chemistry; D012828:Silicones / Q000737:chemistry*; D013997:Time Factors; D014732:Vibration; D014741:Video Recording; D014827:Vocal Cords / Q000502:physiology*
chemical_list: D012828:Silicones; D012825:Silicon