Peng CL et al reported their experiences of using real-time ultrasound in the evaluation of intrinsic tongue movement [2, 6, 7]. The findings of submental ultrasound are quite different from the findings of VFSS which provides the surface information of the tongue in the swallowing of radiopaque barium sulfate bolus. Combined real-time B mode and M mode ultrasound, it was reported the potential of digital data analysis of oral phase swallowing. Kuhl V et al reported the usefulness of ultrasound in the evaluation of laryngeal elevation in patients with dysphagia [8]. They found significant decrease of laryngeal elevation in patients diagnosed as neurogenic dysphasia [8]. Casas et al successfully combined ultrasound examination and plethysmography to evaluate the swallowing condition of children with cerebral palsy [9]. The results of these studies explained the potential of ultrasound in oral swallowing and dynamic laryngeal movement.