CT scans are very good at demonstrating the anatomy of this region, and PET scans are even better at distinguishing between an area of inflammation from cancer

• CT Neck, CT oral, CT neck, cross section through neck: here, here, here
• CT Throat, CT advanced cancer, CT advanced nasopharynx cancer
• PET scans are good to demonstrate response to therapy see here and two good images of the response of vocal cord cancer to radiation here and here. PET scans are much more sensitive than CT in picking up small cancers (go here).
• PET scan will light up any area of infection or inflammation, so everything 'hot' on a PET scan is not cancer (sometimes called a false positive) see here.
• Pet Scan basics. more on PET,

• Floor of Mouth Cancer: here
• Tongue PET scans are better than CT scans go here, and here
• Small Base of Tongue cancers: small base of tongue, small base of tongue with large node, occult cancer with large node
• Base of Tongue cancers: base of tongue , tongue with nodes,   advanced base of tongue, advanced, advanced, advanced
• Oropharynx: here
• Pyriform sinus: here, here
• Soft palate: PET/CT here and here
• Tonsil PET scans: here, here, here, here, here, tonsil nodes, here , here, here, here
• Larynx: T1 lesion, T1 lesion, T4 lesion, T1 lesion here and here
• Supraglottic Larynx: Supraglottic larynx, epiglottis, T2 epiglottis, T2N2 epiglottis and CT, advanced Supraglottic. response to radiation here
• Nasopharynx, here , here , here, here, here, here
• Nasosinus: here, here
• Neck Nodes: Small neck node, large neck nodes, tonsil lymphoma, neck nodes after chemoRx,
• Neck Nodes: PET scans are better than CT at identifying which lymph nodes have cancer in them: see here and here
• Retormolar trigone PET scans: here and here
• Thyroid cancer PET scans  here and here