Radionuclide cystogram

Definition:
A Radionuclide cystogram is a test (nuclear scan) using radioactive material (radioisotope) that is placed into the bladder. A scanner then detects radioactivity to evaluate bladder and urinary tract functions.

Alternative Names:
Bladder scan

How the test is performed:
The specific procedure may vary slightly depending on the indications for the examination (such as reflux, distention, or incomplete emptying, etc.) You are asked to lie on the scanner table. After cleaning the urinary meatus (opening), a catheter is placed into the bladder (in the same manner as when urine catheterization is performed to collect a urine specimen or to drain the bladder). A solution containing the radioisotope is instilled into the bladder until the bladder is full (or you indicate that the bladder feels full). Depending on the suspected problem, the timing of scanning/imaging varies. The bladder may be scanned while full. You may be asked to urinate while being scanned (into a urinal, bedpan, or towels). To test for incomplete bladder emptying, images may be taken with the bladder full, then the person is allowed to get up and urinate into the toilet, return to the scanner, and images are taken immediately after emptying the bladder.

How to prepare for the test:
No medication, fasting, or special diets are usually necessary. A consent form will need to be signed. You will wear a hospital gown. Remove jewelry and metal objects before the scan.

How the test will feel:
There may be some discomfort during insertion of the catheter. Catheterization and urination in public (and sometimes, when lying on the table) may be difficult or embarrassing. The radioisotope and scanning are not felt. After the scan, there may be slight discomfort when urinating for 1 or 2 days, and the urine may be slightly pink. If discomfort persists, fever develops, or if the urine is bright red, notify the health care provider.

Why the test is performed:
This test is performed to evaluate the filling and emptying of the bladder, and to evaluate for reflux of urine or obstruction to the flow of urine.