Urography

What is Urography?

Urography is a medical imaging study that uses x-rays and a contrast dye to visualize the kidneys, ureters and bladder. This procedure, also called intravenous urography (IVU) or excretory urography, allows evaluation of the anatomy and function of the urinary system, highlighting possible obstructions, stones or malformations in the urinary tract.

What is urography useful for?

Urography is useful for diagnosing and evaluating various conditions of the urinary system, including:

• Kidney and ureteral stones.

• Recurrent urinary tract infections.

• Obstructions in the ureters or bladder.

• Tumors or abnormal masses in kidneys, ureters or bladder.

• Congenital problems or malformations of the urinary tract.

This test helps physicians better understand the causes of symptoms such as abdominal pain, blood in the urine, or repeated urinary tract infections.

How is the test performed?

The urography procedure involves the following steps:

• Injection of contrast dye: A contrast dye is injected through a vein in the arm. This contrast travels through the bloodstream to the kidneys and is excreted through the urinary tract, making the structures of the urinary system visible on X-rays.

• X-rays: After the injection, a series of X-rays are taken at various intervals to see how the contrast moves through the kidneys, ureters and bladder. Occasionally, additional images may be ordered to get a more detailed view.

• Duration: The entire study can take anywhere from 30 minutes to 1 hour, depending on how many images are needed.

Preparation for the study

Preparation for urography includes:

• Fasting: Fasting is usually required 6 to 8 hours before the study, although you may drink water.

• Bowel emptying: You may be asked to take a laxative or perform an enema the night before to clean out the bowel and improve the visibility of the images.

• Medications: Inform your physician if you are taking medications, especially if you have allergies to contrast or kidney problems, as instructions may be adjusted.

• Hydration: After the exam, it is recommended that you drink plenty of water to help flush the contrast dye from your body.

What does it feel like during and after the urography?

During urography, the injection of the contrast dye may cause a slight sensation of warmth in the body or a metallic taste in the mouth, but these effects disappear quickly. During the X-rays, you will need to remain still to avoid blurring the images.

After the procedure, it is possible to resume normal activities almost immediately. In some cases, your doctor may recommend drinking extra fluids to help flush the contrast out of your body. It is rare, but some people may experience a mild allergic reaction to the contrast dye, such as itching or rashes, so it is important to inform the medical staff if you have a history of allergies.