Where is the central ray directed for an "open mouth" AP projection of the atlas and axis?
A) Perpendicular through the open mouth
B) Perpendicular to the acanthion
C) Parallel to the acanthiomeatal line
D) Parallel to the orbitomeatal line

Question

Quizplus · Accepted Answer

The central ray for an "open mouth" AP projection of the atlas and axis is directed perpendicular through the open mouth to visualize the odontoid process and the spaces between the atlas and axis.

Where Is the Central Ray Directed for an "Open Mouth