Inter‐Instrument Agreement of Three Ultrasound Systems in Measuring the Cross‐Sectional Area of the Geniohyoid Muscle

What is already known on this subject Ultrasonography can be used to measure the area of the geniohyoid muscle that plays an important role in swallowing. What this paper adds to the existing knowledge The inter-instrument reliability of different ultrasound systems for the cross-sectional area of geniohyoid muscle was revealed. What are the potential or actual clinical implications for this work? Ultrasound systems can be used to measure the mass of swallowing muscle in a wide range of clinical settings.