Perineal ultrasound: an alternative for radiography for evaluating stress urinary incontinence in females.

Perineal sonography was used to assess the position and descent of the bladder neck at rest and during straining in 38 female patients with stress urinary incontinence. Twenty nine patients had primary and nine patients recurrent stress incontinence. There was a statistically significant positive correlation between the degree of sonographically determined bladder neck descent and the severity of stress incontinence by urodynamic criteria among the patients with primary but not with recurrent stress incontinence.