[Value of the lateral urethrocystogram in perineal ultrasound-- are there differences? A prospective study]

In the case of 81 patients, we conducted a perineal ultrasound and a lateral chain urethrocystography under standard conditions. The data collected were compared. The object of this prospective study was, to estimate the comparability of both methods. We also compared, whether the ultrasonically measured values were different between the supine and upright position. The measured values of both methods corresponded at rest, while during strain the values are different. During Valsalva's manoeuvre, the ultrasound method reflects the mobility of the bladder neck better, while the funnelling of the bladder neck can be examined better by lateral chain urethrocystography. The differences between the supine and upright positions were minor in the ultrasound examination, although the funnelling of the bladder neck could be detected better in the upright position. Our study shows that all important measured values can be collected with perineal ultrasound. Except for the funnelling of the bladder neck, typical findings of incontinence can be better shown with perineal ultrasound.