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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.
Urography uses imaging and contrast material to evaluate or detect blood in urine, kidney or bladder stones, and cancer in the urinary tract.Urography with conventional x-ray is known as intravenous pyelogram (IVP). Urography may also be performed using computed tomography (CT) or magnetic resonance imaging (MRI).omputed tomography (CT) urography and magnetic resonance (MR) urography use CT and MR images, respectively, after intravenous contrast material to obtain images of the urinary tract.