RESUMEN
The diagnosis of importance in male is of considerable importance in the field of forensic practice. This work was carried out to evaluate the diagnostic value of penile brachial index and interacorporeal prostaglandin E1 injection in the differentiation between psychogenic and organic importance in males. Thirty male patients complaining of impotence were included in the resent study. Full history, general and local examination were carried out for each case, also laboratory studies including, blood sugar levels, urine, prostatic analysis, serum testosterone and prolactin levels were done. Patients involved in the present study were divided according to laboratory investigations and sexual history into two main groups psychogenic and organic group. Penile brachial index was calculated and results were compared with those of intracorpoeal prostaglandin E1 injection in both groups. The patients with normal penile brachial index [above 0.7] tend to give positiveresponse with prostaglandin E1, while patients with poor penile branchial index [less than 0.7] tend to give negative response with prostaglandin E1. Positive response with prostaglandin E1 injection was considered if an erection angle was more than 70 degree sign and maintained more than one hour with good tumescence and rigidity