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Normative data for certain vocal fold biomarkers among young normophonic adults using ultrasonography
Santosh Rai1, Divya Ramdas2, Nidhi Lalu Jacob2
1Department of Radiodiagnosis and Imaging, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, 575001, Karnataka, India.
Purpose:
The current study aimed to profile vocal fold morphology, vocal fold symmetry, gender and task-specific data for vocal fold length (VFL) and vocal fold displacement velocity (VFDV) in young normophonic adults in the age range of 18-30 years using ultrasonography (USG).
Methods:
Participants underwent USG across quiet breathing, /a/ phonation and /i/ phonation tasks, and acoustic analysis was conducted to explore the relationship between USG and acoustic measures.
Results:
The study found that males have longer vocal folds than females, and overall greater velocities were observed in /a/ phonation, followed by /i/ phonation, with the lowest velocity observed in the quiet breathing task.
Conclusions:
The obtained norms can be used as a quantitative benchmark for analyzing the vocal fold behavior in young adults.
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