Application of color Doppler ultrasound combined with intracavernous injection in diagnosis of penis erectile dysfunction

Objective To explore the application value of color Doppler ultrasound combined with intracavernous injection in diagnosis of penis erectile dysfunction(ED). Methods One hundred and seventeen patients with ED were injected with 30 mg papaverine in corpus cavernosum penis to induce erectile. The diameter of corpus cavernosum artery,peak systolic velocity (PSV),end diastolic velocity (EDV) and resistance index (RI) were examined by ultrasound before and after intracavernous injection. Results After intracavernous injection,there were 46 case (39.3%) of normal penile erection with PSV≥35 cm/s,EDV5 cm/s and RI≥1.0. While in vasculogenic ED,there were 24 cases (20.5%)of arteriogenic ED with PSV35 cm/s,EDV5 cm/s,and 30 cases (25.6%)of venogenic ED with PSV≥35 cm/s,EDV≥5 cm/s. There were 17 cases(14.5%)of mixed vascular ED with PSV35cm/s,EDV≥5cm/s. RI of all the patients with vascular ED was less than 1.0. There was no significant difference in the diameter of artery after intracavernous injection. Conclusion Intracavernous injection combined with color Doppler ultrasound is a reliable method in diagnosis of vascular ED.