For a lateral projection of the paranasal sinuses,the central ray is directed:
A) 1 inch posterior to the outer canthus.
B) 2 inches posterior to the outer canthus.
C) 1 inch anterior to the EAM.
D) 2 inches anterior to the EAM.

Question

Quizplus · Accepted Answer

The central ray for a lateral projection of the paranasal sinuses is directed 1 inch posterior to the outer canthus to properly visualize the sinuses.

For a Lateral Projection of the Paranasal Sinuses,the Central Ray