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Updated: Jan 31, 2026

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
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Dynamic 3D MRI for vocal fold oscillation measurements.

Johannes Fischer1, Paula L Jordan1, Fiona Stritt2

  • 1Dept. of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

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Summary

This study introduces a novel magnetic resonance imaging (MRI) technique for dynamic 3D visualization of vocal fold (VF) oscillations. This non-invasive method enhances diagnosis of VF diseases and voice production studies.

Keywords:
Laryngeal MRIdynamic MRIhighspeed MRImotion compensationphonationvocal fold oscillation

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Laryngology

Background:

  • Human voice production relies on rapid vocal fold (VF) oscillations.
  • Current diagnostic methods like endoscopy offer limited 3D structural information of VFs.
  • Existing magnetic resonance imaging (MRI) provides 3D data but lacks the temporal resolution for dynamic VF analysis.

Purpose of the Study:

  • To develop a novel MRI method for high-temporal-resolution, 3D visualization of vocal fold oscillations.
  • To enable non-invasive assessment of VF dynamics for improved diagnostics and research.

Main Methods:

  • Utilized zero echo time (ZTE)-MRI to capture rapid VF oscillations.
  • Integrated projection navigators for laryngeal motion compensation.
  • Performed simultaneous voice recordings to correlate with imaging data.

Main Results:

  • Achieved a temporal resolution of 819μs and spatial resolution of 0.77 mm.
  • Enabled the first dynamic, 3D visualization of vocal fold oscillations.
  • Quantified key parameters like vertical displacement (1.2 mm) and contact area changes (25.9 mm²).

Conclusions:

  • The proposed ZTE-MRI technique provides unprecedented dynamic 3D insights into vocal fold function.
  • This non-invasive approach can serve as a valuable diagnostic tool for vocal fold diseases.
  • Facilitates advanced research in voice production mechanisms and biomechanics.