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  Indian J Med Microbiol
 

Figure 1: Ultrasound measurements of anterior neck soft tissue and tongue thickness. (a) Distance from the skin to hyoid bone. Anterior surface of hyoid bone appears hyperechoic and casts a hypoechoic shadow. (b) The epiglottis is visible through the thyrohyoid membrane as a curvilinear hypoechoic structure, and its anterior surface by hyperechoic pre-epiglottic space. Distance from the skin to the thyrohyoid membrane was measured until the anterior border of epiglottis. (c) Tongue thickness – the maximum vertical distance from the tongue surface to submental skin

Figure 1: Ultrasound measurements of anterior neck soft tissue and tongue thickness. (a) Distance from the skin to hyoid bone. Anterior surface of hyoid bone appears hyperechoic and casts a hypoechoic shadow. (b) The epiglottis is visible through the thyrohyoid membrane as a curvilinear hypoechoic structure, and its anterior surface by hyperechoic pre-epiglottic space. Distance from the skin to the thyrohyoid membrane was measured until the anterior border of epiglottis. (c) Tongue thickness – the maximum vertical distance from the tongue surface to submental skin