For a PA chest projection with accurate positioning, the
1)SID is set at 72 inches (183 cm).
2)shoulders are positioned at equal distances from the IR.
3)upper midcoronal plane is tilted slightly toward the IR.
4)elbows and shoulders are rotated posteriorly.
A) 1 and 2 only
B) 2 and 3 only
C) 1, 2, and 4 only
D) 1, 2, 3, and 4

Question

Quizplus · Accepted Answer

The SID is set at 72 inches to reduce magnification and improve image quality, and the shoulders should be equidistant from the IR to ensure no rotation.

For a PA Chest Projection with Accurate Positioning, the