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Reliability of Ultrasonography in Evaluating Hyoid Bone Movement
Yen-Chih Chen1, Ming-Yen Hsiao1, Yi-Chian Wang1
1Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei City, Taiwan, ROC.
Journal of Medical Ultrasound
|August 2, 2018
Summary
Ultrasonography reliably measures hyoid bone displacement during swallowing, showing high accuracy when compared to videofluoroscopic swallowing studies (VFSS). This technique offers a reproducible method for assessing swallowing function.
Area of Science:
- Swallowing physiology
- Diagnostic imaging
- Biomechanical analysis
Background:
- Laryngeal elevation and hyoid bone movement are critical for normal swallowing.
- Dysphagia assessment requires accurate measurement of hyoid bone displacement.
Purpose of the Study:
- To assess the reliability and accuracy of ultrasonography for measuring hyoid bone displacement during swallowing.
- To compare ultrasonography measurements with videofluoroscopic swallowing study (VFSS) findings.
Main Methods:
- Ultrasonography with a self-designed water balloon transducer was used to measure hyoid bone displacement.
- Ten participants with dysphagia underwent both ultrasonographic examination and VFSS within 24 hours.
- Inter- and intrarater reliability were assessed using intraclass correlation coefficients (ICCs).
Main Results:
- High intrarater reliability (ICCs 0.996, 0.959) and interrater reliability (ICC 0.892) were found for ultrasonography.
- Ultrasonography showed strong agreement with VFSS (ICCs 0.815, 0.916).
Conclusions:
- Submental ultrasonography is a reliable and accurate tool for evaluating hyoid bone movement during swallowing.
- This method provides a reproducible alternative for dysphagia assessment.
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