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Intravenous urography is a test which x rays the urinary system using intravenous dye for diagnostic purposes. Of the many ways to obtain images of the urinary system, the intravenous injection of a contrast agent has been traditionally considered the best. The kidneys excrete the dye into the urine.
An intravenous pyelogram, also called intravenous urography, is a diagnostic X-ray of the kidneys, ureters, and bladder. When a contrast dye is injected intravenously (IV), the urinary tract will show up very clearly, which is not seen on regular X-rays.n intravenous pyelogram, also called intravenous urography, is a diagnostic X-ray of the kidneys, ureters, and bladder. When a contrast dye is injected intravenously (IV), the urinary tract will show up very clearly, which is not seen on regular X-rays.