X-ray examination of the urethra, after introduction of a radio-opaque fluid, so that its outline and any narrowing or other abnormalities may be observed in X-ray photographs (urethrograms). In ascending urethrography a radio-opaque jelly is injected up the urethra using a special syringe and penile clamp. In descending urethrography (micturating cystourethrography, MCUG), X-rays of the urethra can be taken during the passing of water-soluble contrast material previously inserted into the bladder.
Radiography of the urethra after it has been filled with contrast medium.