Male Erectile Dysfunction

Erectile dysfunction (ED) is defined as the persistent or repeated inability, for a duration of at least 6 months, to attain or maintain an erection sufficient for satisfactory sexual performance. Aging, along with the comorbidities that are often associated with aging, may independently or synergistically contribute to ED. There may be several psychogenic or organic causes for ED. The causes and evaluation of ED are discussed, with particular consideration of sonographic techniques for evaluation.