Information for Patients
"How is Orthopantomography (OPG) and Cephalometry done?"
An OPG aims to view the jaw, while blurring out the other structures of the face and skull. This is done using a technique called "tomography". As the x-ray tube moves around your head, the x-ray image moves in the opposite direction behind your head. This generates an image where the jaw is in focus, and the skull is blurred.
Cephalograms are taken with the face viewed from the side (lateral).