[Registration of the vocal field for the clinical assessment of voice].

Phonatory function was assessed in 92 patients with various laryngeal diseases; polyps of the vocal cords, Reinke's edema, laryngeal papillomatosis (56, 17 and 19 patients, respectively). The control group consisted of 58 healthy subjects with normal voices. Principal acoustic voice parameters were measured using phonetograms: pitch range, maximum intensity range, area of the vocal field. The tests were made before and 10 days after endolaryngeal microsurgery. Marked postsurgical subjective voice improvement was achieved in most cases and was confirmed by acoustic measurements. Mean values of the above acoustic parameters demonstrated significant (p < 0.05) improvement after phonosurgery. The best functional results were recorded in the group with vocal cord polyps. The conclusion is made that quantitative assessment of phonetograms provides reliable information for clinical voice evaluation.