A Lateral Sacral Projection with Accurate Positioning Demonstrates

Multiple Choice

A lateral sacral projection with accurate positioning demonstrates
1) the long axis of the sacrum aligned with the long axis of the collimated field.
2) near-superimposition of the greater sciatic notches.
3) an open L5-S1 intervertebral disk space.
4) the median sacral crest in profile.

A) 1 and 2 only
B) 1, 2, and 3 only
C) 3 and 4 only
D) 1, 2, 3, and 4