For a PA oblique esophagus projection (RAO position) with accurate positioning,
a. the patient is rotated until the midcoronal plane is at a 35- to 40-degree angle with the IR.
b. the central ray is centered to the esophagus at the level of T6 to T7.
c. an 11- ? 14-inch (28- ? 35-cm) IR is used.
d. the patient drinks barium before the exposure only.
A
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