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Article

Comparison of Tongue Characteristics Classified According to Ultrasonographic Features Using a K-Means Clustering Algorithm

1
Department of Preventive Dentistry, Naresuan University, Phitsanulok 65000, Thailand
2
Department of Dysphagia Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan
*
Author to whom correspondence should be addressed.
Diagnostics 2022, 12(2), 264; https://doi.org/10.3390/diagnostics12020264
Submission received: 24 November 2021 / Revised: 15 January 2022 / Accepted: 19 January 2022 / Published: 21 January 2022
(This article belongs to the Special Issue Artificial Intelligence in Oral Health)

Abstract

The precise correlations among tongue function and characteristics remain unknown, and no previous studies have attempted machine learning-based classification of tongue ultrasonography findings. This cross-sectional observational study aimed to investigate relationships among tongue characteristics and function by classifying ultrasound images of the tongue using a K-means clustering algorithm. During 2017–2018, 236 healthy older participants (mean age 70.8 ± 5.4 years) were enrolled. The optimal number of clusters determined by the elbow method was 3. After analysis of tongue thickness and echo intensity plots, tongues were classified into three groups. One-way ANOVA was used to compare tongue function, tongue pressure, and oral diadochokinesis for /ta/ and /ka/ in each group. There were significant differences in all tongue functions among the three groups. The worst function was observed in patients with the lowest values for tongue thickness and echo intensity (tongue pressure [P = 0.023], /ta/ [P = 0.007], and /ka/ [P = 0.038]). Our results indicate that ultrasonographic classification of tongue characteristics using K-means clustering may aid clinicians in selecting the appropriate treatment strategy. Indeed, ultrasonography is advantageous in that it provides real-time imaging that is non-invasive, which can improve patient follow-up both in the clinic and at home.
Keywords: artificial intelligence; ultrasonography; tongue; algorithm; dysphagia artificial intelligence; ultrasonography; tongue; algorithm; dysphagia

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MDPI and ACS Style

Chantaramanee, A.; Nakagawa, K.; Yoshimi, K.; Nakane, A.; Yamaguchi, K.; Tohara, H. Comparison of Tongue Characteristics Classified According to Ultrasonographic Features Using a K-Means Clustering Algorithm. Diagnostics 2022, 12, 264. https://doi.org/10.3390/diagnostics12020264

AMA Style

Chantaramanee A, Nakagawa K, Yoshimi K, Nakane A, Yamaguchi K, Tohara H. Comparison of Tongue Characteristics Classified According to Ultrasonographic Features Using a K-Means Clustering Algorithm. Diagnostics. 2022; 12(2):264. https://doi.org/10.3390/diagnostics12020264

Chicago/Turabian Style

Chantaramanee, Ariya, Kazuharu Nakagawa, Kanako Yoshimi, Ayako Nakane, Kohei Yamaguchi, and Haruka Tohara. 2022. "Comparison of Tongue Characteristics Classified According to Ultrasonographic Features Using a K-Means Clustering Algorithm" Diagnostics 12, no. 2: 264. https://doi.org/10.3390/diagnostics12020264

APA Style

Chantaramanee, A., Nakagawa, K., Yoshimi, K., Nakane, A., Yamaguchi, K., & Tohara, H. (2022). Comparison of Tongue Characteristics Classified According to Ultrasonographic Features Using a K-Means Clustering Algorithm. Diagnostics, 12(2), 264. https://doi.org/10.3390/diagnostics12020264

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