If the patient was unable to assume a supine position for sacral imaging, what modification is required?
AP axial with 15 degree cephalic
PA Axial with 15 degree cephalic
PA axial with 15 degree caudal
PA
PA axial with 15 degree caudal
Rationale: When reversing the projection with an axial, the tube angle degree remains the same, but the direction is directed opposite. A PA axial sacrum will use a 15 degree caudal central ray.
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