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

Renal artery stenosis is a narrowing in the artery that supplies the kidney with blood. Therefore the kidney senses low perfusion pressure and assumes that the body has low blood pressure, and produces chemicals that raise blood pressure. The patient subsequently experiences high blood pressure or hypertension. The stenosis is usually at the origin of the renal artery and occurs predominantly in elderly patients who have atherosclerosis and vascular disease elsewhere also. They are usually on mu