Fig. 5.

Hyoid excursion assessed using videofluoroscopy. Dashed measurement lines for calculation of the distance from hyoid to mandible at rest (a) and at maximal hyoid displacement (b). The white drawings were used to define the measurement point at the mandibular prominence. The inferior-anterior part of the hyoid and the mandibular prominence were used as measurement points to approximate the measurement methods of the radiographic images to those for ultrasound and based on reported methodology in the literature [23]