Real-time ultrasound visualization of tongue movement during swallowing.
Using noninvasive real-time ultrasound, tongue movement was visualized during single swallowing in eight normal subjects and one neurologically impaired patient with dysphagia and chronic aspiration. In normals, a clearly defined muscular wave of the tongue, traveling at approximately 15 cm/sec, carried a 5-cc test water bolus posteriorly. In the patient who had 12th cranial nerve weakness, there was complete absence of normal tongue activity and no midtongue bolus formation or transmission.
D000328:Adult; D001037:Aphasia / Q000473:pathology / Q000503:physiopathology; D003679:Deglutition; D005260:Female; D006801:Humans; D008297:Male; D014059:Tongue / Q000033:anatomy & histology / Q000473:pathology / Q000502:physiology* / Q000503:physiopathology; D014463:Ultrasonography