Abstract
Most dynamic magnetic resonance imaging of the levator veli palatini (levator) muscle has been limited to studies using sustained phonation (Yamawaki et al. 1996; Ettema et al. 2002; Tian et al., 2010a, 2010b; Kollara and Perry, 2013). Dynamic MRI sequences at faster imaging speeds using word-level productions have been described along the midsagittal image plane (Sutton et al., 2009; Bae et al., 2011; Scott et al., 2013) and oblique coronal image plane (Perry et al., 2013b, 2013c; Scott et al., 2013). The purpose of this presentation is to describe methods for analyzing the velopharyngeal mechanism and velar muscles during rest and speech production using MRI. This presentation will demonstrate a potentially useful technique in dynamic MRI that does not rely on cyclic repetitions or sustained phonation and can provide dynamic information related to muscle function. Innovative techniques in imaging and interpreting dynamic MRI of velopharyngeal function during speech will be described. It is expected these developments will provide insights that will improve clinical methods in resonance assessments among children born with cleft lip and palate.
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