DRCG Scan (Direct Radionuclide Cystogram)

DRCG Scan (Direct Radionuclide Cystogram) – Details & Precautions

A DRCG scan (Direct Radionuclide Cystogram) is a nuclear medicine test used to evaluate vesicoureteral reflux (VUR), a condition where urine flows backward from the bladder into the ureters or kidneys. It is commonly performed in children with recurrent urinary tract infections (UTIs) to check for reflux that may cause kidney damage.

Details of a DRCG Scan

Purpose

• Detects vesicoureteral reflux (VUR) (urine backflow from the bladder to the kidneys).
• Evaluates bladder function and emptying.
• Identifies urinary tract abnormalities in children with frequent UTIs.
• Monitors VUR treatment progress.

Procedure

1. Bladder Catheter Insertion

   • A thin, sterile catheter is inserted into the bladder through the urethra.
   • The bladder is emptied before the scan.

2. Radioactive Tracer Instillation

   • A small amount of Technetium-99m tracer mixed with saline is introduced into the bladder via the catheter.
   • The bladder is gradually filled with the radioactive solution.

3. Imaging Process

   • You will lie still under a gamma camera.
   • The camera captures images as the bladder fills and empties.
   • If urine moves back into the ureters or kidneys, vesicoureteral reflux (VUR) is present.

4. Completion

   • The catheter is removed after imaging, and the bladder is emptied.
   • The scan results determine if reflux is present, its severity, and if treatment is needed.

Precautions for a DRCG Scan

Before the Test

✅ Hydration:

• No special preparation is required, but drinking plenty of fluids may help.

✅ Fasting:

• Not required for this test.

✅ Medication Restrictions:

• Inform your doctor about any antibiotics, diuretics, or bladder medications.
• Some children may be given prophylactic antibiotics to prevent infection after the test.

✅ Recent Urinary Tract Infections (UTIs):

• If the child has a current UTI, the test may be postponed until the infection clears.

✅ Pregnancy/Breastfeeding:

• Pregnant women should not be present in the imaging room.

During the Test

• Mild discomfort may occur when the catheter is inserted.
• Young children may feel anxious, so sedation is sometimes used to keep them calm.

After the Test

✅ Encourage drinking water to flush out the radioactive tracer.
✅ Watch for signs of UTI (burning urination, fever, or discomfort).
✅ Resume normal activities unless instructed otherwise.