Vocal cord ultrasound. Transverse image of the larynx in a 3-year-old male 2 days after division of a vascular ring. The right vocal fold (small arrows) is abducted. The edge of the left vocal fold is hard to visualize (because it runs parallel to the ultrasound beam), but its adducted position is confirmed by the medial position of the left arytenoid cartilage (large arrow).