Our experiences of VFSS showed the usefulness VFSS in diagnosing and management of patients with swallowing problem or dysphagia [4, 5, 10, 11]. To our knowledge, there was little experience of comparing between ultrasound and VFSS in patients with swallowing problem. Therefore, we conducted this study to correlate submental ultrasound and VFSS findings and tried to find out the clinical feasibility and usefulness.