<p><span style="font-size:14px">This non-invasive investigation uses ultrasound to assess both the structure and blood flow in the renal arteries.<br />Color Doppler Duplex technology allows real-time visualization of blood vessels, enabling the detection of any narrowing (stenosis), obstructions, or circulation abnormalities that may affect kidney function.<br />It is useful in diagnosing renovascular hypertension, renal vascular disorders, and in monitoring kidney transplants.</span></p><p>&nbsp;</p><p>&nbsp;</p><p><span style="font-size:14px">For optimal visualization of the renal arteries, it is recommended to:</span></p><ul><li><span style="font-size:14px">Avoid eating for at least 6 hours prior to the investigation (still water is allowed).</span></li><li><span style="font-size:14px">Avoid foods that cause bloating (such as beans, cabbage, and carbonated beverages) the day before the procedure.</span></li></ul>