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  1. Home
  2. Health Library
  3. Tests
  4. Radionuclide cystogram

Radionuclide cystogram

Tests
Nuclear bladder scan

A radionuclide cystogram is a special imaging nuclear scan test. It checks how well your bladder and urinary tract work.

The specific procedure may vary slightly depending on the reason for the test.

You will lie down on a scanner table. After cleaning the urinary opening, the health care provider will place a thin, flexible tube, called a catheter, through the urethra and into the bladder. A liquid with radioactive material flows into the bladder until the bladder is full or you say that your bladder feels full.

The scanner detects radioactivity to check your bladder and urinary tract. When the scan is to be done, depends on the suspected problem. You may be asked to urinate into a urinal, bedpan, or towels while being scanned.

To test for incomplete bladder emptying, images may be taken with the bladder full. Then you will be allowed to get up and urinate into the toilet and return to the scanner. Images are taken immediately after emptying the bladder.

How to Prepare for the Test

There is no special preparation needed. You will need to sign a consent form. You will be asked to wear a hospital gown. Remove jewelry and metal objects before the scan.

How the Test will Feel

You may feel some discomfort when the catheter is inserted. It may feel difficult or embarrassing to urinate while being observed. You cannot feel the radioisotope or the scanning.

After the scan, you may feel slight discomfort for 1 or 2 days when you urinate. The urine may be slightly pink. Call your provider if you have ongoing discomfort, a fever, or bright red urine.

Why the Test is Performed

This test is done to see how your bladder empties and fills. It can be used to check for urine reflux or a blockage in urine flow. It is most often done to evaluate people with urinary tract infections, particularly children.

Normal Results

A normal value is no reflux or other abnormal urine flow, and no obstruction to the flow of urine. The bladder empties completely.

What Abnormal Results Mean

Abnormal results may be due to:

  • Abnormal bladder response to pressure. This could be due to a nerve problem or other disorder.
  • Back flow of urine (vesicoureteric reflux)
  • Blockage of the urethra (urethral obstruction). This is most commonly due to an enlarged prostate gland.

Risks

Risks are the same as for x-rays (radiation) and catheterization of the bladder.

There is a small amount of radiation exposure with any nuclear scan (it comes from the radioisotope, not the scanner). The exposure is less than with standard x-rays. The radiation is very mild. Nearly all the radiation is gone from your body in a short time. However, any radiation exposure is discouraged for women who are or might be pregnant.

Risks for catheterization include urinary tract infection and (rarely) damage to the urethra, bladder, or other nearby structures. There is also a risk of blood in the urine or burning sensation with urination.

References

Elder JS. Vesicoureteral reflux. In: Kliegman RM, Stanton BF, St. Geme JW, Schor NF, eds. Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 539.

Khoury AE, Bagli DJ. Vesicoureteral reflux. In: Wein AJ, Kavoussi LR, Partin AW, Peters CA, eds. Campbell-Walsh Urology. 11th ed. Philadelphia, PA: Elsevier; 2016:chap 137.

BACK TO TOP

Review Date: 1/31/2019

Reviewed By: Sovrin M. Shah, MD, Assistant Professor, Department of Urology, The Icahn School of Medicine at Mount Sinai, New York, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

 
 
 

 

 

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Tests for Radionuclide cystogram

  • Radionuclide cystogram

  • Retrograde cystography

Related Information

  • PET scan

  • Reflux nephropathy

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