Abstract
Assessment of swallowing function is often invasive or involves irradiation. Analysis of swallowing sounds is a noninvasive method for assessment of swallowing but is not used in daily medical practice. Dysphagia could be the first symptom that occurs in head and neck cancer. This study evaluated a method for the automatic detection and analysis of swallowing sounds in healthy subjects and in patients with pharyngolaryngeal cancer. A smartphone application, developed for automatic detection and analysis of swallowing sounds was developed and tested in 12 healthy volunteers and in 26 patients with pharyngolaryngeal cancer. Swallowing sounds were recorded with a laryngophone during a standardized meal (100 mL mashed potatoes, 100 mL water, and 100 mL yogurt). Swallowing number and duration were noted; the results were compared to a standard swallowing sound analysis using the software AUDACITY®. There were no statistically significant differences in swallowing number or duration between the two analysis methods for the three types of foods in healthy volunteers and only for water in patients. In healthy volunteers, the results of our automatic analysis were comparable with those obtained with the standard analysis. However, a better discrimination of swallowing sounds is necessary for the algorithm to obtain reliable results with thicker food in patients with head and neck cancer.
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Abbreviations
- HNC:
-
Head and neck cancer
- ms:
-
Millisecond
- mL:
-
Millilitre
- SSD:
-
Swallowing sound duration
- SN:
-
Swallowing number
- FN:
-
False negative
- FP:
-
False positive
- Se:
-
Sensitivity
- PPV:
-
Positive predictive value
- TNM:
-
Tumoral classification according to tumor (T), nodular (N) or metastasis (M) criteria from the 8th edition of the American Joint Commission of Cancer
- DT:
-
Detection threshold parameter
- SR:
-
Sound richness parameter
- EA:
-
End of analysis parameter
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Acknowledgements
We would like to thank the “Société française de carcinologie cervico-faciale” for its financial support. We would also like to thank “textcheck” for reviewing this article. For a certificate, please see: http://www.textcheck.com/certificate/ltDLWD.
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Rayneau, P., Bouteloup, R., Rouf, C. et al. Automatic Detection and Analysis of Swallowing Sounds in Healthy Subjects and in Patients with Pharyngolaryngeal Cancer. Dysphagia 36, 984–992 (2021). https://doi.org/10.1007/s00455-020-10225-9
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DOI: https://doi.org/10.1007/s00455-020-10225-9