Overview

A computerized tomography (CT) urogram is an imaging exam used to evaluate the urinary tract. The urinary tract includes the kidneys, bladder and the tubes (ureters) that carry urine from the kidneys to the bladder.

A CT urogram uses X-rays to generate multiple images of a slice of the area in your body being studied, including bones, soft tissues and blood vessels. These images are then sent to a computer and quickly reconstructed into detailed 2D images.

During a CT urogram, an X-ray dye (iodine contrast material) is injected into a vein in your hand or arm. The dye flows into the kidneys, ureters and bladder, outlining each of these structures. X-ray pictures are taken at specific times during the exam, so your doctor can clearly see your urinary tract and assess how well it's working.