Diagnostic Value of Penile Duplex and Color Doppler Sonography

Song, Young Jin; Jung, Gyung Woo

Abstract

We used duplex and color Doppler sonography to assess the hemodynamic function of the penis in normal male and in patients with impotence to determine the competence of penile vascular system. The measured parameters are the diameter. peak-systolic velocity (PSV), end-diastolic velocity (EDV) and resistance index (RI) in each cavernosal artery before and after injection of 10ug of PGE, at 5, 10, 15 and 20 minutes. The results obtained are as follows: 1. In 20 normal control group after PGE, injection, the values of maximal and minimal mean PSV were 47.0+/-19.5 cm/sec and 35.7+/-20.9 cm/sec, the values of maximal and minimal mean EDV, 2.7+/-3.7 cm/sec and 0.6+/-1.6 cm/sec and the values of maximal and minimal mean RI, 1. 0+/-0.0 and 0.9+/-0.1, each respectively. 2. In 5 arteriogenic impotence patients after PGE. injection, the values of maximal and minima1 mean PSV were 16.2+/-7,8 cm/sec and 10.5+/-5.1 cm/sec. the values of maximal and minimal mean EDV, 2.4+/-1.7 cm/sec and 1.5+/-1.5 cm/sec and the values of maximal and minimal mean RI, 0.8+/-0.1 and 0.8+/-0.2, each respectively. 3. In 6 venogenic impotence patients after PGE. injection, the values of maximal and minimal mean PSV were 39.0+/-33.6 cm/sec and 33.8+/-26.1 cm/sec, the values of maximal and minimal mean EDV, 7.5+/-4.4 cm/sec and 4.7+/-2.9 cm/sec and the values of maximal and minimal mean RI, 0.8+/-0.1 and 0.8+/-0.1, each respectively. These findings suggest that PSV and EDV are important parameters for the diagnosis of arteriogenic and venogenic impotence, respectively. It is thought that duplex and color Doppler sonography with intracavernous PGE, injection is valuable screening test for vasculogenic impotence.