X-RAY RGU AND MCU

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X-RAY RGU AND MCU Image

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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

  1. Check-in: Consent form and allergy review.
  2. Positioning: Lie on the X-ray table; groin area cleaned.
  3. Catheter: A soft feeding tube is inserted; contrast is dripped in for RGU.
  4. Bladder filling: Tube is clamped, then unclamped for MCU while you void.
  5. 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 / ObservationDescriptionGeneral Interpretation / Significance
Narrowed urethral segmentShort or long strictureLikely scar; may need dilatation
Contrast up to kidneys during MCUVesicoureteral refluxGrade 1–5; determines antibiotic vs. surgery
Bladder trabeculationIrregular wall patternPossible 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.

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