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A right posterior oblique for a nephrogram will demonstrate which structures?

  1. Left ureter and right kidney

  2. Right ureter and left kidney

  3. Left ureter and left kidney

  4. Right ureter and right kidney

The correct answer is: Right ureter and left kidney

In a right posterior oblique (RPO) position for a nephrogram, the orientation of the patient helps to visualize specific anatomical structures effectively. The RPO position rotates the body towards the right side, which causes the left kidney to move into a more favorable position for imaging. In this position, the right kidney is seen in profile due to its anatomical placement, while the left kidney is projected more towards the center of the field of view. This position also allows for better visualization of the left ureter as it becomes more pronounced and is less obscured by the right kidney or other structures. Thus, the correct answer demonstrates the visibility of the left ureter and left kidney, aligning with the expected anatomical outcomes when using a right posterior oblique for nephrographic imaging. The other options do not accurately reflect the structures that would be best visualized in this orientation.