[Ultrasonic retrograde urethrography. Technique. Comparison with radiologic retrograde urethrography].

Using ultrasound scan urethrography (U.S.U.) and radiological retrograde urethrography (R.U.), the anterior urethra has been studied in 61 males in an attempt to establish the best technique to perform U.S.U. and to compare it, from the technical point of view, with R.U. U.S.U. should be made retrogradely filling the urethra with a saline solution, under direct ultrasound guidance, which allows to see the anterior urethra, from the syringe come introduced into the glandular urethra up to the urogenital diaphragm and the beginning of the membranous urethra. Overall, U.S.U. is faster to perform than R.U., nine times cheaper, more comfortable for the patient, and there is no risk of exposure to irradiation or radiological markers.