The provider uses ultrasound and/or fluoroscopy, imaging technologies that display live images on a video monitor, to create an access route into the ureter and guide placement of a ureteral stent, a thin tube placed into a ureter at an area of stricture (narrowing) to prevent obstruction or to maintain drainage of urine from the ureter. He may also inject contrast material to image the internal structures of the kidney (nephrostogram) and ureter (ureterogram). The provider does not place a separate nephrostomy catheter, an artificial pathway between the kidney and outside of the body to allow drainage of urine from the renal pelvis where urine collects and drains into the ureter and on to the bladder.. The procedure includes radiological supervision and interpretation.
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