Our experience in the ultrasonographic evaluation of the prostate and seminal vesicles in prostatitis and male infertility are reported herein. In our view, this noninvasive imaging technique must be performed before recurring to other methods that involve manipulation. Similarly, we discuss the possibilities of duplex Doppler in the diagnosis of vascular disorders in the male consulting for impotence. We believe this simple noninvasive imaging technique can significantly reduce the number of patients that may require cavernosometry and cavernosography.