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RETROGRADE URETHROGRAPHY ( RGU )
This test is for
Male, Female
Understanding RETROGRADE URETHROGRAPHY ( RGU )
What is RETROGRADE URETHROGRAPHY ( RGU )?
- Retrograde Urethrography (RGU) AND Micturating Cystourethrography (MCU) By:- Dr. Shubham Singhal
- 2. Urethrography • Urethrography refers to the radiographic study of the urethra using iodinated contrast media. • Types of Urethrography :- • Retrograde urethrography (RGU) - Contrast is retrogradely injected with the urethral orifice occluded to prevent reflux of contrast. • Antegrade (VCUG) - Bladder is filled with contrast via suprapubic or retrograde catheterization and the urethra is assessed during voiding. • For both, static images can be obtained, but preferably assessed dynamically under fluoroscopy. • The male urethra is best seen in the oblique position. • Female urethra is best seen in lateral or anteroposterior position. • Voiding cystourethrogram is mostly used to visualize and evaluate :- prostatic urethra and changes in the bladder neck. • Retrograde urethrogram is mostly used to evaluate :- membranous and anterior urethra , inflammatory lesions and diverticula. • Some patients are assessed with both techniques, usually the RGU is performed first, followed by the VCUG.
- 3. Retrograde/Ascending Urethrography (RGU) INDICATIONS:- • Stricture • Urethral Trauma • Fistulae or false passages • Congenital abnormalities • Periurethral / prostatic abscess CONTRAINDICATIONS:- • Acute UTI • Recent instrumentation
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