Fig. 2

The anterior-posterior dimension (APD) or thickness of thesternocleidomastoid (SCM), longus colli (LCo), carotid artery (CA) (A), upper trapezius (Utrap), and total neck extensor muscles(TNE) (B)
The anterior-posterior dimension (APD) or thickness of thesternocleidomastoid (SCM), longus colli (LCo), carotid artery (CA) (A), upper trapezius (Utrap), and total neck extensor muscles(TNE) (B)