Three-dimensional volume rendering has been performed in more than 200 patients undergoing nephron-sparing surgery at the authors' center. This technique has proved to be highly accurate and has replaced preoperative angiography in almost all cases. It provides all of the information required for preoperative and intraoperative planning in nephron-sparing surgery in a single test. The three-dimensional video format allows the surgeon to appreciate the pertinent findings and has proved to be highly useful to urologists in preoperative and intraoperative surgical planning.