Abstract
To estimate the healing process of inflammatory diseases of the larynx objectively, photoelectric glottogram was applied. Reflecting light on the mucosal wave during vocal cord vibration was detected through the rigid-type endoscope, and transformed into electric signals for analyzing the frequency patterns based on the glottal area during phonation. The control patterns showed variability in fundamental and sequential frequencies among individuals. However, after microscopic laryngeal surgery and/or conservative therapy including the nebulization for such diseases as laryngeal nodes and acute laryngitis, it was possible to estimate the healing process objectively by this method.
