A less than optimal AP axial sacral projection demonstrating sacral foreshortening
A) will also demonstrate the symphysis pubis superimposing the fifth sacral segment.
B) was obtained with the patient rotated toward the right side.
C) was obtained with too much cephalic central ray angulation.
D) was obtained with an insufficient amount of cephalic central ray angulation.

Question

Quizplus · Accepted Answer

An insufficient amount of cephalic central ray angulation will result in sacral foreshortening on an AP axial sacral projection. Choices A and B are not related to sacral foreshortening and the relationship between the symphysis pubis and fifth sacral segment is not mentioned. Choice C is the opposite problem of too much cephalic angulation, which would result in an elongated sacrum.

A Less Than Optimal AP Axial Sacral Projection Demonstrating Sacral