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

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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
JournalJournal of Voice
DOIs
StateAccepted/In press - 2016
Externally publishedYes

Keywords

  • Dysphonia
  • Flexible resonance tube in water exercise
  • MRI measurements
  • Vocal nodules
  • Vocal tract

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing
  • LPN and LVN

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