An AP cranial projection can be distinguished from a PA cranial projection because it demonstrates
1)less orbital magnification.
2)the internal auditory canals horizontally through the orbits.
3)less distance from the lateral orbital margins to the lateral cranial cortices.
4)the anterior clinoids and dorsum sellae superior to the ethmoid sinuses.
A) 1 only
B) 1 and 3 only
C) 3 only
D) 2, 3, and 4 only

Question

Quizplus · Accepted Answer

An AP cranial projection shows less distance from the lateral orbital margins to the lateral cranial cortices compared to a PA projection due to the divergence of the X-ray beam.

An AP Cranial Projection Can Be Distinguished from a PA