Fig. 2

Tongue root distance and Tongue thickness .Sagittal view of the suprahyoid structures using low frequency transducer, placed in the submandibular area behind the mentum. Tongue root distance was measured from the neck’s skin to the tongue root, as indicated by the dotted line. Tongue thickness was measured from the neck’s skin to the farthest end of the tongue, as indicated by the dotted line. GH – Geniohyoid muscle, GG – Genioglossus muscle, TS – Dorsal tongue surface