Information for Patients

A cystourethrogram is a study of the lower urinary tract.  Similarly, a cystogram examines the bladder, and the urethrogram examines the urethra (the opening through which you urinate).  The examination shows the appearance of the bladder and/or the urethra and how they fill.

Please follow the instructions on your appointment letter carefully. Each examination has a different preparation, instructions of which will be sent to you.

The investigation involves exposure to x-rays.  X-rays consist of a type of radiation known as ionising radiation.  The doses that are used in medical x-rays are very low and the associated risks are minimal.  We keep the doses as low as possible and make sure that the benefits of having the x-ray outweigh any risk. 

Furthermore, the contrast dye that is often used contains iodine, which some people are allergic to.  If you have had an allergic reaction to x-ray contrast in the past of if you have a known allergy to iodine, please let us know.

Also, x-rays can be harmful for an unborn baby and should be avoided by women who are or who may be pregnant.  It is recommended that the examination is performed within 10 days of the first day of the onset of your menstrual period. 

When you arrive, report to X-ray Central Reception (Area 4) or X-ray North.  The procedure is done by a radiologist with help of a radiographer.  The procedure uses x-rays and contrast dye to show the lower urinary tract.  A small amount of contrast dye will be put into your bladder via a catheter.  As the contrast flows into your lower urinary tract, pictures will be taken.  You may be repositioned so that the area can be viewed from a various angles. Once the images have been taken, the catheter will be removed and you will be able to use the toilet.  You may be asked to return to the room so that additional x-ray images may be taken of your empty bladder.

Once the examination is completed you will be taken back to your cubicle to get dressed. You may then go home and eat and drink normally.

It is advisable to drink a lot of fluids after the examination to flush out any residual contrast dye that may be left in the bladder.

The results of your examination will not be given to you on the same day. To receive these results you will need an appointment see either the consultant who referred you, or your own GP. You will be told after the examination which of these doctors you need to see.