This document discusses transradial access for treating erectile dysfunction. It provides background on the definition and causes of ED, and the relationship between ED and coronary artery disease. Treatment options for ED are discussed including oral medications, injections, devices, and angioplasty of the internal iliac arteries, pudendal arteries, and penile arteries performed through radial artery access. The results of one physician's experience with this technique are presented, showing high success rates and low complications. Ultrasound is also summarized as a diagnostic tool for evaluating penile blood flow velocities and identifying venous leakage.