Voiding Cystourethrogram (VCUG)- About the Exam
A Voiding Cystourethrogram (VCUG) is an x-ray exam performed to evaluate the urinary system. VCUG allows radiologists to see how well the bladder and its connecting tubes (called the urethra and the ureters) are working. The x-ray can also determine whether the flow of urine is normal as the bladder empties.
What you can expect during a VCUG:
- During the VCUG, you will be lie flat on an x-ray table.
- Next, your pubic area will be cleaned and the radiologist will place a catheter, a small thin tube, into the urethra, the opening from which urine exits the body.
- After the catheter is in place, your radiologist will use the catheter to fill your bladder with a solution, called a contrast agent, to opacify the urinary tract.
- The radiologist then begins to take x-rays using a fluoroscope, an x-ray unit that is attached to a monitor or television screen.
- After the radiologist has obtained the intial images, your catheter will be removed and you will be asked to urinate into a receptacle while the radiologist continues to take x-rays.
Usually, patients are not restricted from eating or drinking before a VCUG. However, they may be restricted from urinating immediately before the test. A VCUG is not usually painful, though the pressure of a bladder full of contrast agent can be uncomfortable to some. The insertion of the catheter can also be uncomfortable. To help make it easier on the patient, some physicians may place a numbing agent around the urethra before inserting the catheter.
Learn how to prepare for Voiding Cystourethrogram (VCUG).
Learn the benefits and risks of Voiding Cystourethrogram (VCUG).
Watch the X-ray - What to Expect Video.
