kidney and urinary tract disorders
Imaging Tests of the Urinary Tract
Retrograde urography
In retrograde urography, a radiopaque contrast agent is introduced directly into the ureters or the collecting system of the kidney. This procedure is usually done during Cystoscopy or another routine urologic procedure such as ureteroscopy (insertion of a catheter into the ureters) or placement of a stent in the ureter or kidney. The urinary tract can be examined, including the parts of the kidney through which urine drains. Retrograde urography can be done to diagnose scarring, tumors, or abnormal connections between parts of the urinary tract and other structures (fistulas). Retrograde urography can be done if a radiopaque contrast agent cannot be given (for example, if kidney function is poor). 