and Interventional Radiology, the Radiological Society of Rhode Island, and the Cardiovascular and Interventional Radiology Society (now the Society of Interventional Radiology) and as the chairman of the Board of the Cardiovascular and Interventional Radiology Research and Educational Foundation. Dr. Dorfman has also served as acting chief of the Image Guided Intervention Branch and special assistant to the associate director of the National Cancer Institute (NCI) Cancer Imaging Program. He is a fellow of the Society of Interventional Radiology, the American Heart Association’s Council on Cardiovascular Radiology, the American College of Angiology, and the American College of Radiology. He is on the faculty of the Radiological Society of North America (RSNA) Clinical Trials Methodology Workshop; is chair of the Clinical and Transitional Science Awards Imaging Working Group’s Clinical Trials Committee, in which capacity he leads the Uniform Protocols for Imaging in Clinical Trials Process; is the organizing faculty member for the RSNA Interventional Oncology Symposium; and was a member of NCI’s Translational Research Working Group and its Writing Committee. Dr. Dorfman received his MD from the Yale University School of Medicine.

Barbara Evans, PhD, JD, LLM, is a law professor, codirector of the Health Law and Policy Institute, and director of the Center on Biotechnology and Law at the University of Houston Law Center. She is an adjunct research professor of clinical pharmacology at the Indiana University School of Medicine and an affiliated investigator of the Indiana University Center for Bioethics. Earlier in her career, she was a partner in the international regulatory practice of a large New York law firm and advised clients on US medical-device regulatory matters. She holds a bachelor’s degree in electrical engineering from the University of Texas at Austin, an MS in applied earth science and a PhD in earth sciences from Stanford University, a JD from Yale Law School, and an LLM in health law from the University of Houston, and she completed a postdoctoral fellowship in clinical ethics at the M.D. Anderson Cancer Center.

Lazar J. Greenfield, MD, retired as chairman of the Department of Surgery and surgeon-in-chief of University of Michigan Hospitals in 2002 and became interim executive vice-president for medical affairs. He serves as editor-in-chief of Surgery News and associate editor of e.FACS, the Web portal of the American College of Surgeons. He is a member of the Institute of Medicine. Dr. Greenfield is board-certified in general, vascular, and cardiothoracic surgery. He has been listed in Best Doctors in America since 1992. Dr. Greenfield is the inventor of the Greenfield vena caval filter for protection against pulmonary embolism, for which he received the

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