Fig. 1
From: Cross-sectional imaging in cancers of the head and neck: how we review and report
Axial T2-weighted images showing the deep spaces of the suprahyoid neck at the level of the oropharynx a and the infrahyoid neck at the level of the thyroid b which are demarcated by the deep fascia of the neck. The retropharyngeal space is a potential space between the perivertebral space and the pharyngeal mucosa space above and the visceral space below the level of the hyoid bone