Laryngofiberstrobovideography Performed in Conjunction with the Phonatory Examination

Abstract

In this study, the phonatory examination was performed while monitoring vocal fold vibration using laryngofiberstrobovideography. The vocal fold vibration was videotaped under the light source of a very bright laryngostroboscope, using a flexible laryngofiberscope inserted intra-nasally and a home video camera. Simultaneously, the phonatory examination was conducted by use of a phonation-analyzer. The data were entered into a microcomputer via A/D converter and analyzed to obtain parameters of pitch, intensity, airflow, and I/F index, which were superimposed on the image of the vocal fold vibration on the video screen.