Examine this AP oblique projection image. What patient position was required to obtain this image?

A) 25 to 30 degree LPO
B) 25 to 30 degree RPO
C) 30 to 45 degree LPO
D) 30 to 45 degree RPO

Question

Examine this AP oblique projection image. What patient position was required to obtain this image?

A) 25 to 30 degree LPO 
B) 25 to 30 degree RPO 
C) 30 to 45 degree LPO 
D) 30 to 45 degree RPO

Quizplus · Accepted Answer

The image shows the cervical spine with the right intervertebral foramina open. This can only be achieved with an RPO position, which allows the left zygapophyseal joint to be projected over the intervertebral foramina, creating an open space on the right. A 25 to 30 degree rotation is appropriate for visualizing the cervical spine in this way.

Examine This AP Oblique Projection Image