Transperineal ultrasound image in the mid-sagittal plane demonstrates the descent of the bladder, uterus and rectal ampulla during real-time leaking in the cough stress test. Measurements represent the maximally caudal organ position, which is the distance between the leading edge of the organs [bladder neck (BN), cervix (CX) and rectal ampulla (R)] and the horizon line at the level of the posterior inferior margin of the pubic symphysis (P). Measurements cranial to the reference line are positive; those caudal to the line are negative. P: pubic symphysis, BN: bladder neck, CX: cervix, U: urethra, V: vagina, R: rectal ampulla