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. 2023 Jul 26;96(1149):20230046. doi: 10.1259/bjr.20230046

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© 2023 The Authors. Published by the British Institute of Radiology

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 Unported License http://creativecommons.org/licenses/by-nc/4.0/, which permits unrestricted non-commercial reuse, provided the original author and source are credited.

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Figure 1. — Pharyngeal anatomy. (a) Anatomical divisions of the pharynx and their boundaries. Sagittal T2-weighted MRI. Nasopharynx (NP): skull base to the free edge of the soft palate. Oropharynx (OP): free edge of the soft palate to the hyoid bone. Hypopharynx (HP): hyoid bone to the inferior border of the cricoid cartilage or cricopharyngeus muscle.(b-e) Important anatomical landmarks within each subdivison. Axial T1-weighted MR images through the pharynx. (b) Nasopharynx; Tt = torus tubarius; (c, d) Oropharynx; *** = epiglottis; (d,e) Hypopharynx; \ / = aryepiglottic folds; LI = laryngeal inlet. Note the complex anatomy at the oropharyngeal-hypopharyngeal-supraglottic junction, where from one cavity (OP), two separate cavities arise (HP and larynx).