B-mode ultrasound scanning of the tongue during swallowing.
The aim of the present study was to evaluate the ability of video-based dynamic B-mode ultrasound in differentiating normal from abnormal swallowing. Tongue position at rest and during the oral phase of swallowing was examined with a 5 MHz transducer placed under the chin in 60 subjects aged between 6 and 33 years. 40 patients with abnormal tongue movement or swallowing were compared with a control group of 20 adults with Angle Class I occlusion without any signs of dysfunctional tongue activity. The ultrasound sequences were videotaped and the movement of the tongue in swallowing a 2 ml water bolus analysed qualitatively. An abnormal swallowing pattern was demonstrated in 19 patients. Those with an Angle Class III malocclusion had the highest rate of abnormal swallowing. Video-based ultrasound scanning in the sagittal plane seems to be a useful screening method for the diagnosis of poor tongue coordination during swallowing, especially for the imaging of tongue thrust in children.
Department of Orthodontics, University of Aachen, Germany.
R A
RA
Fuhrmann
P R
PR
Diedrich
D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002648:Child; D003680:Deglutition Disorders / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000150:complications / Q000503:physiopathology; D014059:Tongue / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014463:Ultrasonography / Q000379:methods; D014743:Videotape Recording