X-RAY RGU AND MCU
Also Known As
Lab Test
₹6500
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About The Test
- Dual imaging in one visit – RGU shows the urethra while MCU captures the bladder in action.
- Latest digital fluoroscopy minimizes radiation exposure.
- Dedicated pediatric room with distraction tools and trained technicians.
- Results within 2 hours for walk-ins; priority slots for pre-surgical cases.
What is X-Ray RGU and MCU?
Definitions
- Retrograde Urethrogram (RGU): Contrast dye is gently pushed backward through the urethra to outline its walls and look for narrowing or leaks.
- Micturating Cystourethrogram (MCU): The bladder is filled, then X-rays are taken while you urinate to check for reflux or abnormal flow.
How Contrast Dye Reveals the Urinary Tract
A water-soluble iodinated dye coats the lining, making even tiny strictures or reflux jets light up clearly on the screen.
Types of X-Ray RGU and MCU
- Standard iodinated contrast for most adults.
- Pediatric low-dose protocol with weight-based contrast volume and faster frame rates.
List of Parameters
- Urethral caliber and length
- Bladder capacity and contour
- Presence, grade, and timing of reflux
- Any filling defects, fistulas, or diverticula
Why This Test
- Recurrent UTIs with no clear cause
- Suspected urethral stricture or fistula
- Pre-surgical mapping before prostate, bladder, or hypospadias repair
When to Take Test
Common Symptoms That Prompt the Test
- Burning urine or repeated infections
- Poor urine stream or dribbling
- Blood in urine or post-surgery follow-up
Pediatric vs. Adult Indications
- Children: Suspected vesico-ureteral reflux, bed-wetting, or urinary tract infection (UTI) work-up.
- Adults: Stricture evaluation, prostate surgery planning, or trauma assessment.
Benefits
Benefits of Taking the X-Ray RGU and MCU
- Precise anatomical mapping guides surgeons and avoids unnecessary scopes.
- Real-time function testing shows how the bladder empties, aiding therapy choices.
Illnesses Diagnosed with X-Ray RGU and MCU
- Urethral strictures
- Vesicoureteral reflux
- Neurogenic bladder
- Bladder diverticula, stones, or fistulas
Preparing for test
- Diet: Light meal 4 h before; clear fluids up to 1 h prior.
- Medications: Hold diuretics on the morning of the test.
- Hydration: Drink 500 ml water on waking to keep kidneys active.
Pre-requisites X-Ray RGU and MCU
- Recent urine culture (< 7 days) to rule out active infection.
- Pregnancy screening for females of child-bearing age (serum β-hCG on day of test).
Best Time to Take the X-Ray RGU and MCU
- Morning slots: Easier fasting and faster post-procedure recovery.
- Women: Schedule 3–10 days after periods start to avoid early pregnancy concerns.
Eligibility
- Minimum age: Newborn (with neonatal protocol).
- Contraindications: Active UTI, known anaphylaxis to iodine, or pregnancy.
Procedure for Taking an X-Ray RGU and MCU
- Check-in: Consent form and allergy review.
- Positioning: Lie on the X-ray table; groin area cleaned.
- Catheter: A soft feeding tube is inserted; contrast is dripped in for RGU.
- Bladder filling: Tube is clamped, then unclamped for MCU while you void.
- Images captured: Instant digital X-rays at every phase; total time 20–30 min.
Caution Before Taking the Test
- Inform staff about asthma, shellfish allergy, or previous contrast reaction.
- Remove belts, zippers, and jewellery from the waist down.
Test Results
Results and Interpretations
Finding / Observation | Description | General Interpretation / Significance |
---|---|---|
Narrowed urethral segment | Short or long stricture | Likely scar; may need dilatation |
Contrast up to kidneys during MCU | Vesicoureteral reflux | Grade 1–5; determines antibiotic vs. surgery |
Bladder trabeculation | Irregular wall pattern | Possible neurogenic bladder or obstruction |
Risks & Limitations
- Radiation: Equivalent to 6 months of natural background; pediatric low-dose protocols cut this by 40 %.
- Allergy: Mild rash in < 1 %; emergency drugs always on standby.
- Inconclusive: Severe spasm or poor bladder filling may require repeat imaging.
FAQs
Is the test painful?
Mild sting during dye insertion; numbing gel and gentle technique keep discomfort minimal.
How long does RGU MCU take?
From check-in to finish, plan 45 minutes.
Can children undergo RGU MCU?
Yes. Pediatric-trained radiographers and smaller catheters make it safe even for infants.
Are there alternatives without radiation?
MRI urography is an option but lacks real-time voiding data and costs more.
What if contrast allergy occurs?
On-site crash cart with antihistamines and steroids; severe reactions are rare.
When will I receive the results?
Same day for walk-ins; online portal access within 2 hours.