Analysis of 3-D Tongue Motion From Tagged and Cine Magnetic Resonance Images Purpose Measuring tongue deformation and internal muscle motion during speech has been a challenging task because the tongue deforms in 3 dimensions, contains interdigitated muscles, and is largely hidden within the vocal tract. In this article, a new method is proposed to analyze tagged and cine magnetic resonance images of ... Research Article
Research Article  |   June 01, 2016
Analysis of 3-D Tongue Motion From Tagged and Cine Magnetic Resonance Images
 
Author Affiliations & Notes
  • Fangxu Xing
    Johns Hopkins University, Baltimore, MD
  • Jonghye Woo
    Harvard Medical School, Boston, MA
  • Junghoon Lee
    Johns Hopkins University, Baltimore, MD
    Johns Hopkins University School of Medicine, Baltimore, MD
  • Emi Z. Murano
    Johns Hopkins University School of Medicine, Baltimore, MD
  • Maureen Stone
    University of Maryland School of Dentistry, Baltimore, MD
  • Jerry L. Prince
    Johns Hopkins University, Baltimore, MD
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Fangxu Xing: fxing1@jhu.edu
  • Editor: Jody Kreiman
    Editor: Jody Kreiman×
  • Associate Editor: Kate Bunton
    Associate Editor: Kate Bunton×
Article Information
Swallowing, Dysphagia & Feeding Disorders / School-Based Settings / Regulatory, Legislative & Advocacy / Telepractice & Computer-Based Approaches / Speech, Voice & Prosody / Speech / Research Articles
Research Article   |   June 01, 2016
Analysis of 3-D Tongue Motion From Tagged and Cine Magnetic Resonance Images
Journal of Speech, Language, and Hearing Research, June 2016, Vol. 59, 468-479. doi:10.1044/2016_JSLHR-S-14-0155
History: Received June 6, 2014 , Revised November 29, 2014 , Accepted December 2, 2015
 
Journal of Speech, Language, and Hearing Research, June 2016, Vol. 59, 468-479. doi:10.1044/2016_JSLHR-S-14-0155
History: Received June 6, 2014; Revised November 29, 2014; Accepted December 2, 2015
Web of Science® Times Cited: 2

Purpose Measuring tongue deformation and internal muscle motion during speech has been a challenging task because the tongue deforms in 3 dimensions, contains interdigitated muscles, and is largely hidden within the vocal tract. In this article, a new method is proposed to analyze tagged and cine magnetic resonance images of the tongue during speech in order to estimate 3-dimensional tissue displacement and deformation over time.

Method The method involves computing 2-dimensional motion components using a standard tag-processing method called harmonic phase, constructing superresolution tongue volumes using cine magnetic resonance images, segmenting the tongue region using a random-walker algorithm, and estimating 3-dimensional tongue motion using an incompressible deformation estimation algorithm.

Results Evaluation of the method is presented with a control group and a group of people who had received a glossectomy carrying out a speech task. A 2-step principal-components analysis is then used to reveal the unique motion patterns of the subjects. Azimuth motion angles and motion on the mirrored hemi-tongues are analyzed.

Conclusion Tests of the method with a various collection of subjects show its capability of capturing patient motion patterns and indicate its potential value in future speech studies.

Acknowledgments
This project was supported by National Cancer Institute Grant 5R01CA133015 (awarded to Maureen Stone), National Institute on Deafness and Other Communication Disorders Grant K99/R00 DC009279 (awarded to Emi Z. Murano), and National Institute on Deafness and Other Communication Disorders Grant K99 DC012575 (awarded to Jonghye Woo).
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