Voiding Cystogram

Cystography is an exam of the bladder using x-rays. This test is done by a radiologist, a doctor who specializes in the use of x-ray imaging to diagnose and treat health conditions. During a cystography, the bladder is filled with a special contrast medium (x-ray dye). This medium ensures more detailed x-ray pictures.


  • A catheter (thin tube) will be inserted into the urethra up to the bladder. You will feel pressure.
  • The dye or medium is injected through the catheter into the bladder.
  • As your bladder fills with this liquid, you will feel the urge to urinate.
  • Tell the radiologist when the urge becomes uncomfortable.
  • The catheter is removed. X-rays are taken of the full bladder.
  • You will be asked to empty your bladder while more x-rays are taken.
  • This procedure takes about one hour.


  • No prep needed for this exam.
  • Arrive 15 minutes prior to your scheduled appointment with a prescription if your doctor has given you one.


  • Due to the effect on the study, do not plan on having this exam performed at the same time as any other GI procedures.
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