A PA esophagus projection that demonstrates the esophagus to the right of the vertebral column January 2, 2023 by admin will also demonstrate the right SC joint superimposed by the vertebral column. was obtained with the patient rotated into an RAO position. was obtained with the shoulders at equal distances from the IR. was obtained with the right side of the chest positioned at a greater OID than the left side. See Answer was obtained with the right side of the chest positioned at a greater OID than the left side.