When using the angled grid technique for the PA axial (Caldwell method)projection of the sinuses,the vertical grid device must be angled _____ degrees.
A) 7
B) 10
C) 15
D) 20

Question

Quizplus · Accepted Answer

The vertical grid device must be angled 15 degrees for the PA axial (Caldwell method) projection of the sinuses to properly project the petrous ridges in the lower third of the orbits.

When Using the Angled Grid Technique for the PA Axial