8.6K views · 178 reactions | Renal Artery Duplex Anatomy, Protocol and Pathology Renal artery doppler is a powerful tool for the diagnosis of Renal Artery Stenosis (RAS). One of the more involved exams in the sonographers arsenal, learning the proper anatomy and techniques can make the process a challenging yet pleasurable one. Indications Hypertension Abdominal bruit Known renal artery stenosis follow up Elevated BUN and creatinine Hematuria (Nutcracker Syndrome) | John Z Wetmore | Facebook