Possible Clues:

• Photos at the dentist's
• The Sun's probing axes Chief of Staff -- pictures inside!
• Pictures of your insides?
• Electromagnetic waves, for medical diagnoses, say
• They'll show you the bones of oxtail and fish sauce starter?
• Dentists study them
• Set of pictures at a dentist's
• Shots at the doctor's office?
• Pictures for the dentist
• They look into wrong mark given to swimmers