Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Usefulness of shear wave elastography in the diagnosis of oral and maxillofacial diseases

  • Ogura, Ichiro (Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry at Niigata) ;
  • Nakahara, Ken (Advanced Research Center, The Nippon Dental University School of Life Dentistry at Niigata) ;
  • Sasaki, Yoshihiko (Radiology, The Nippon Dental University Niigata Hospital) ;
  • Sue, Mikiko (Radiology, The Nippon Dental University Niigata Hospital) ;
  • Oda, Takaaki (Radiology, The Nippon Dental University Niigata Hospital)
  • Received : 2018.04.27
  • Accepted : 2018.07.04
  • Published : 2018.09.30
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Abstract

Purpose: To evaluate the usefulness of shear wave elastography in the diagnosis of oral and maxillofacial diseases. Materials and Methods: Ten patients with oral and maxillofacial diseases and 28 volunteers drawn from our student doctors were examined by shear wave elastography with a 14-MHz linear transducer using an Aplio 300 apparatus (Canon Medical Systems, Otawara, Japan). A statistical analysis of the shear elastic modulus(kPa) of healthy tissue (the sublingual gland, submandibular gland, anterior belly of the digastric muscle, and geniohyoid muscle) in the 28 volunteers was performed using 1-way repeated measures analysis of variance with the Tukey honest significant difference test. The maximum shear elastic modulus(kPa) of 8 patients with squamous cell carcinoma (SCC) and 2 patients with benign lesions was evaluated with the Mann-Whitney U test. The analysis used a 5% significance level. Results: The mean shear elastic modulus of the sublingual gland ($9.4{\pm}3.7kPa$) was lower than that of the geniohyoid muscle ($19.2{\pm}9.2kPa$, P=.000) and the anterior belly of the digastric muscle ($15.3{\pm}6.1kPa$, P=.004). The maximum shear elastic modulus of the SCCs($109.6{\pm}14.4kPa$) was higher than that of the benign lesions($46.4{\pm}26.8kPa$, P=.044). Conclusion: Our results demonstrated the usefulness of shear wave elastography in the diagnosis of oral and maxillofacial diseases. Shear wave elastography has the potential to be an effective technique for the objective and quantitative diagnosis of oral and maxillofacial diseases.

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References

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