Vocal Tract Adjustments of Dysphonic and Non-Dysphonic Women Pre- and Post-Flexible Resonance Tube in Water Exercise: A Quantitative MRI Study

Autor(es)

Yamasaki, Rosiane ; Murano, Emi Z. ; Gebrim, Eloisa ; Hachiya, Adriana ; Montagnoli, Arlindo ; Behlau, Mara ; Tsuji, Domingos

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF VOICE; v. 31, n. 4, p. 442-454, JUL 2017.
• Citações Web of Science: 4

Resumo

Objective. To compare vocal tract (VT) adjustments of dysphonic and non-dysphonic women before and after flexible resonance tube in water exercise (FRTWE) at rest and during phonation using magnetic resonance imaging. Study Design. Prospective study. Methods. Twenty women, aged 20-40 years, 10 dysphonic with vocal nodules (VNG) and 10 controls (CG), underwent four sets of sagittal VT MRI: two pre-FRTWE, at rest and during phonation, and two post-FRTWE, during phonation and at rest. The subjects performed 3 minutes of exercise. Nine parameters at rest and 21 during phonation were performed. Results. Pre-FRTWE, eight significant differences were found, three at rest and five during phonation: at rest - laryngeal vestibule area, distance from epiglottis to pharyngeal posterior wall (PPW) and interarytenoid complex length were smaller in the VNG; during phonation - laryngeal vestibule area, angle between PPW and vocal fold (VF), epiglottis to PPW, and anterior commissure of the larynx to laryngeal posterior wall were smaller in the VNG; tongue area was larger in the VNG. Post-FRTWE, only three significant differences were found, two during phonation and one at rest: during phonation - angle between PPW and VF and the membranous portion of the VF length were smaller in the VNG; at rest - distance from epiglottis to PPW was smaller in the VNG. Conclusions. Results suggest that the habitual VT adjustments of dysphonic and non-dysphonic women are different at rest and during phonation. The FRTWE promoted positive VT changes in the VNG, reducing the intergroup differences. (AU)

• Processo FAPESP: 12/17390-3 - Trato Vocal de Mulheres Normais e Disfônicas Pré e Pós Técnica Lax Vox®: Análise Bidimensional às Simulações Acústicas com Modelos Físicos
• Beneficiário: Rosiane Kimiko Yamasaki Odagima
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado