A PA chest reveals the left sternoclavicular joint to be closer to the midline than the left. What is the positioning error?
the right shoulder was positioned closer to the IR than the left
the left shoulder was positioned closer to the IR than the right
the patient's shoulders were not relaxed
the shoulders were not rolled forward
the left shoulder was positioned closer to the IR than the right
Rationale: Evidence of the left SC joint being closer to the midline than the right indicates the patient's left shoulder was positioned closer to the IR than the right.
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