An intravenous pyelogram (also known as IVP, pyelography, intravenous urogram or IVU) is a radiological procedure used to visualise abnormalities of the urinary system, including the kidneys, ureters, and bladder.

An injection of x-ray contrast media is given to a patient via a needle or cannula into the vein. The contrast is removed from the body via the kidneys and is visible there on x-rays almost immediately. X-rays are taken at specific time intervals to capture the contrast as it travels through the different parts of the urinary system. This gives a comprehensive view of the patient's anatomy and some information on the functioning of the renal system.