The evaluation of a patient with erectile dysfunction includes a complete history and physical exam to identify any medical conditions that may be contributing factors. In some cases, hormone testing is indicated. There are many tests that can be performed to evaluate erectile function including penile ultrasounds, angiography, and an invasive test to assess the venous system within the penis called DICC, direct infusion cavernosometry and cavernosography. In this test, needles are inserted in the penis, and the pressure within the penis is measured as fluid is instilled and then contrast is instilled as images are obtained. In general, none of these tests are indicated, as these tests often do not influence management. For most patients, the appropriate management of erectile dysfunction is the least invasive treatment that works.