[The role of penile Doppler sonography in the diagnosis of vascular impotence. Preliminary studies].

Normal, potent arteriopathic and impotent arteriopathic subjects have been studied by means of the Doppler method for the determination of penile systolic pressure. A penile systolic pressure value less than 75 mmHg and a penisarm pressure index of than 0.55 were always associated with impotence. If present in the arteriopathic, impotence is not always caused by vascular factors.