7f2aaf6b_Whole_Body_PET_CT_anatomy__4
[1] Retropharyngeal nodes [2] Base of skull [3] Cranial edge of the bodyof hyoid bone [5] Prevertebral m. (longuscolli, longus capitis) [6] Medial edge of internalcarotid artery [7] Midline [4] 
Levator veli palatini m.
Whole-Body PET-CT anatomy
4