all of the following statements regarding an exact PA projection of the skull with the central ray perpendicular to the film are true except?
a- the oribtomeatal line is perpendicular to the film
b- the petrous pyramids fill the orbits
c- the midsagittal plane is parallel to the film
d- the central ray exits at the nasion
a- the oribtomeatal line is perpendicular to the film
b- the petrous pyramids fill the orbits
c- the midsagittal plane is parallel to the film
d- the central ray exits at the nasion
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Technique