Correlation of perineal ultrasound and lateral chain urethrocystography in the anatomical evaluation of the bladder neck

Although perineal ultrasound has been widely used, no standard values have been published. In 52 women with urinary stress incontinence the following parameters were measured during resting and straining: a) with ultrasound: distance (Dy) between bladder neck and central line of the symphysis, distance (Dx) between bladder neck and lower border of the symphysis, and retrovesical angle β; b) with urethrocystography (UCG): distance H between the bladder neck and the SCIPP line, inclination angle α and retrovesical angle β. Dy and H correlated during resting (r=0.608; p<0.001) and straining (r=0.575; p