What is cystography?
Cystography is an imaging test that can help diagnose problems in your bladder. It
uses X-rays. They may be X-ray pictures or fluoroscopy, a kind of X-ray "movie."
During cystography, the healthcare provider will insert a thin tube called a urinary
catheter and inject contrast dye into your bladder. The contrast dye will let the
healthcare provider see your bladder more clearly. He or she will take X-rays of the
bladder. Cystography is sometimes combined with other procedures. For example, cystourethrography
images the bladder and the urethra. The healthcare provider may also use fluoroscopy
to watch how the bladder empties while you urinate (voiding cystourethrography). Cystography
may show whether any urine backs up into the kidneys (vesicoureteral reflux). CT cystography
is sometimes used following trauma or recent surgery.
X-rays use a small amount of radiation to create images of your bones and internal
organs. X-rays are most often used to find bone or joint problems, or to check the
heart and lungs. Cystography is one type of X-ray.
Why might I need cystography?
You might need cystography to find out the cause of:
Blood in your urine (hematuria)
Urinary tract infections that keep coming back
Problems emptying your bladder
Urinary reflux, when urine flows back into 1 or both ureters and, in some cases, to
1 or both kidneys
Other reasons that you may need cystography:
Trauma to the bladder. The test will let your healthcare provider see if you have
a tear in the wall of your bladder.
A blockage in or narrowing (strictures) of the ureters or urethra
Before or after certain spine surgeries. This will let your provider see possible
problems with the nerves leading to the bladder from the spine.
Your healthcare provider may have other reasons to recommend cystography.
What are the risks of cystography?
You may want to ask your healthcare provider about the amount of radiation used during
the test. Also ask about the risks as they apply to you.
Consider writing down all X-rays you get, including past scans and X-rays for other
health reasons. Show this list to your provider. The risks of radiation exposure may
be tied to the number of X-rays you have and the X-ray treatments you have over time.
Tell your provider if:
You are pregnant or think you may be pregnant. Radiation exposure during pregnancy
may lead to birth defects.
You are allergic to or sensitive to medicines, contrast dyes, local anesthesia, iodine,
You have kidney failure or other kidney problems
You are at risk for a bladder infection because a thin tube (catheter) is put into
your bladder during the test. The catheter may also cause bleeding or hematuria.
Certain things can make the results of the test less accurate. These include:
You may not be able to have cystography if you:
You may have other risks depending on your specific health condition. Be sure to talk
with your provider about any concerns you have before the procedure.
How do I get ready for cystography?
Your healthcare provider will explain the procedure to you. Ask him or her any questions
you have about the procedure.
You may be asked to sign a consent form that gives permission to do the procedure.
Read the form carefully and ask questions if anything is not clear.
You may need to stop eating and drinking before the test. Your healthcare provider
will give you specific instructions. Generally, this means no food after midnight
and only clear liquids the day of the test. You may be told to drink additional clear
liquids the day before and day of the procedure.
Tell your provider if you are pregnant or think you may be pregnant.
Tell your provider if you have had a reaction to any contrast dye, or if you are allergic
Tell your provider if you are sensitive to or are allergic to any medicines, latex,
tape, or anesthetic medicines (local and general).
Tell your provider about all medicines you are taking. This includes prescriptions,
over-the-counter medicines, and herbal supplements.
Tell your healthcare provider if you have had a bleeding disorder. Also tell your
provider if you are taking blood-thinning medicine (anticoagulant), aspirin, or other
medicines that affect blood clotting. You may need to stop these medicines before
Tell your provider if you have kidney disease.
You may be told to take a laxative the night before the test. Or you may be given
an enema or medicine to make you have a bowel movement the morning of the test.
Follow any other instructions your provider gives you to get ready.
What happens during cystography?
You may have a cystography test as an outpatient or as part of your stay in a hospital.
The way the test is done may vary depending on your condition and your healthcare
Generally, a cystography follows this process:
You'll be asked to remove any clothing, jewelry, or other objects that might get in
the way of the test.
You will be asked to remove clothing. You will be given a gown to wear.
You will be asked to empty your bladder before the test.
You will lie on your back on the X-ray table.
The healthcare provider will put a thin tube (catheter) into your bladder. He or she
will use this to inject the contrast dye into the bladder.
The healthcare provider will take an X-ray of the kidney, ureter, and bladder (KUB)
to make sure the he or she can see the urinary system. For men, the healthcare provider
may put a lead shield over the testes to protect the gonads from the X-rays.
The healthcare provider will inject the contrast dye into the bladder through the
catheter. He or she will clamp the catheter tubing to keep the dye from draining out
of the bladder.
The healthcare provider will take X-rays while the dye is injected and afterward.
You may be asked to change position for different X-ray views of the urinary system.
If you are having a voiding cystography, the healthcare provider will remove the catheter
and you will be asked to urinate. The healthcare provider will take X-ray or fluoroscopy
films while you urinate. You may be allowed to sit or stand if you are not able to
urinate while lying down.
If you are not having a voiding cystography, the healthcare provider will remove the
catheter after all the X-ray views have been taken.
What happens after cystography?
You don't need any special care after a cystography. You may go back to your usual
diet and activities, unless your healthcare provider tells you differently.
You should drink additional fluids for a day or so after the test. This will help
the contrast dye flush out of your system. This will also help prevent a bladder infection.
You may have mild pain when you urinate. Or you may see a pink color in your urine
for a day or two after the test. This is considered normal.
Call your healthcare provider right away if any of these happen:
Your healthcare provider may give you other instructions, depending on your situation.
Before you agree to the test or the procedure make sure you know:
The name of the test or procedure
The reason you are having the test or procedure
What results to expect and what they mean
The risks and benefits of the test or procedure
What the possible side effects or complications are
When and where you are to have the test or procedure
Who will do the test or procedure and what that person’s qualifications are
What would happen if you did not have the test or procedure
Any alternative tests or procedures to think about
When and how you will get the results
Who to call after the test or procedure if you have questions or problems
How much you will have to pay for the test or procedure