Magnetic resonance imaging-based measurement of internal deformation of vibrating vocal fold models.
J Acoust Soc Am
; 145(2): 989, 2019 02.
Article
em En
| MEDLINE
| ID: mdl-30823819
ABSTRACT
A method is presented for tracking the internal deformation of self-oscillating vocal fold models using magnetic resonance imaging (MRI). Silicone models scaled to four times life-size to lower the flow-induced vibration frequency were embedded with fiducial markers in a coronal plane. Candidate marker materials were tested using static specimens, and two materials, cupric sulfate and glass, were chosen for testing in the vibrating vocal fold models. The vibrating models were imaged using a gated MRI protocol wherein MRI acquisition was triggered using the subglottal pressure signal. Two-dimensional image slices at different phases during self-oscillation were captured, and in each phase the fiducial markers were clearly visible. The process was also demonstrated using a three-dimensional scan at two phases. The benefit of averaging to increase signal-to-noise ratio was explored. The results demonstrate the ability to use MRI to acquire quantitative deformation data that could be used, for example, to validate computational models of flow-induced vocal fold vibration and quantify deformation fields encountered by cells in bioreactor studies.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Prega Vocal
/
Imageamento por Ressonância Magnética
/
Modelos Biológicos
Limite:
Humans
Idioma:
En
Revista:
J Acoust Soc Am
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos