[Phonetograms in laryngeal lesions due to vocal abuse]

Using this test, we measure maximum and minimum vocal capacity (sound pressure in dB) from the lowest to the highest frequency that a person can emit and sustain. These measurements are represented on an easily interpreted graph that allows the magnitude of the vocal area to be evaluated. We made phonetograms of persons with nodules (3), polyps (16) and Reinke edema (10) and compared their results to those of a group of 25 healthy subjects. The vocal fields of patients with laryngeal polyp and Reinke's edema were severely reduced.