The provider uses ultrasound and/or fluoroscopy, imaging technologies that display live images on a video monitor, to create a percutaneous access route into the kidney and guide placement of a nephrostomy catheter to drain urine from the collecting system of the kidney and a ureteral stent to relieve a stricture (narrowing), prevent obstruction, or to maintain flow of urine into the bladder. He may also inject contrast material to image the internal structures of the kidney (nephrostogram) and ureter (ureterogram). The procedure includes radiological supervision and interpretation.
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