The right renal artery courses ______ to the inferior vena cava, a common sonographic landmark.

• A. Anterior
• B. Posterior
• C. Superior
• D. Inferior

Answer: (B)

The right renal artery travels behind the inferior vena cava. This posterior relationship to the IVC is a well-known landmark in ultrasound anatomy: the artery arises from the aorta and courses laterally to the kidney, passing posterior to the IVC to reach the right kidney. So “posterior” is the correct description.

Understanding this helps you orient a retroperitoneal scan: if you identify the IVC, the right renal artery will be located behind it. The other positions aren’t consistent with the normal path of the right renal artery: anterior would place it in front of the IVC, while superior or inferior describe vertical relationships that aren’t the standard way we describe its course relative to the IVC.