A study was done on 23 men in order to identify individuals with venous leakage as a cause of erectile impotence. Combined pressure flow measurement and cinecavernosography were performed after the injection of papaverine into the corpora. Nine patients had abnormal venous leakage to varioys drainage systems while the remaining 14 had no venous leakage. The rate of infusion to maintain intracavernosal pressure of 120-150 mmHg was 30-180ml/min in nine patients with venous leakage and it was 2-30ml/min in 14 patients without venous leakage. The authors conclude that cinecavernosography and cavernosometry are essential in the work-up of impotence.