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  • Title: Application of magnetic resonance imaging movie to assess articulatory movement.
    Author: Inoue MS, Ono T, Honda E, Kurabayashi T, Ohyama K.
    Journal: Orthod Craniofac Res; 2006 Aug; 9(3):157-62. PubMed ID: 16918681.
    Abstract:
    OBJECTIVE: To introduce the technique of magnetic resonance imaging (MRI) movie and to propose its feasibility for investigating articulatory movement. SUBJECTS: Five healthy adult females participated in the study. METHODS: Dynamic changes in oropharyngeal structures were assessed with MRI movie during the articulation of a bilabial consonant. RESULTS: Movements of the velum and tongue at a time resolution of 30 ms were complex at the tip of the tongue and the anterior part of the velum. These movements that were seen with a time resolution of 30 ms could not be interpolated or in any way derived from the results obtained with a time resolution of 120 ms. CONCLUSION: The results suggest that MRI movie may be useful in the evaluation of articulation. It is important to reduce the time resolution to 30 ms to obtain images of articulators.
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