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BIBTEX RIS

Accuracy of Acoustic Analysis Measurements in the Evaluation of Patients With Different Laryngeal Diagnoses

2016; Elsevier BV; Volume: 31; Issue: 3 Linguagem: Inglês

10.1016/j.jvoice.2016.08.015

1873-4588

Leonardo Wanderley Lopes, Layssa Batista Simões, Jocélio Delfino da Silva, Deyverson da Silva Evangelista, Ana Celiane da Nóbrega e Ugulino, Priscila Oliveira Costa Silva, Vinícius Jefferson Dias Vieira,

Phonetics and Phonology Research

Objective This study aims to investigate the accuracy of acoustic measures in discriminating between patients with different laryngeal diagnoses. Study Design The study design is descriptive, cross-sectional, and retrospective. Methods A total of 279 female patients participated in the research. Acoustic measures of the mean and standard deviation (SD) values of the fundamental frequency (F0), jitter, shimmer, and glottal to noise excitation (GNE) were extracted from the emission of the vowel /ε/. Results Isolated acoustic measures do not demonstrate adequate performance in discriminating patients with and without laryngeal alteration. The combination of GNE, SD of the F0, jitter, and shimmer improved the ability to classify patients with and without laryngeal alteration. In isolation, the SD of the F0, shimmer, and GNE presented acceptable performance in discriminating individuals with different laryngeal diagnoses. The combination of acoustic measurements caused discrete improvement in performance of the classifier to discriminate healthy larynx vs vocal polyp (SD of the F0, shimmer, and GNE), healthy larynx vs unilateral vocal fold paralysis (SD of the F0 and jitter), healthy larynx vs vocal nodules (SD of the F0 and jitter), healthy larynx vs sulcus vocalis (SD of the F0 and shimmer), and healthy larynx vs voice disorder due to gastroesophageal reflux (F0 mean, jitter, and shimmer). Conclusions Isolated acoustic measures do not demonstrate adequate performance in discriminating patients with and without laryngeal alteration, although they present acceptable performance in classifying different laryngeal diagnoses. Combined acoustic measures present an acceptable capacity to discriminate between the presence and the absence of laryngeal alteration and to differentiate several laryngeal diagnoses.