For an AP AC Joint Projection Without Weights

Multiple Choice

For an AP AC joint projection without weights,
1) the central ray is centered to the AC joint.
2) the midcoronal plane is positioned parallel with the IR.
3) a grid is used if the patient's AP measurement is 6 inches (15 cm) .
4) the patient's shoulders are positioned at equal distances from the IR.

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