When the central ray is aligned with a patient's OML, the tube angle reads 25 degrees caudad. What angulation would you use for this patient for a trauma AP axial (Towne method) cranial projection?
A) Perpendicular
B) 55 degrees caudad
C) 45 degrees caudad
D) 10 degrees cephalad

Question

Quizplus · Accepted Answer

The Towne method requires an angulation of 30 degrees caudad to project the occipital bone. Since the central ray is already angled 25 degrees caudad, it only needs an additional 5 degrees caudad angulation for the Towne method. Therefore, the correct choice is C) 45 degrees caudad.

When the Central Ray Is Aligned with a Patient's OML