CC 1: Radiation Protection Guidance for the United States


The previous set of basic radiation protection recommendations produced by NCRP was Report No. 116, Radiation Protection Guidance for the United States (1993). Since 1993, substantial advances in radiation effects knowledge, as well as radiation protection understanding and culture, have occurred.

New knowledge has been obtained on radiation effects at doses lower than apparent in 1993. A review of recent radiation epidemiologic studies by NCRP Scientific Committee SC 1-25 will address dose-response models in general, including threshold models, and their applicability to radiation protection guidance. The results of the SC 1-25 effort will be reflected in the Council Committee 1 (CC 1) report.

Noncancer effects such as cardiovascular disease and cataracts are emerging as potentially important concerns. NCRP Scientific Committee SC 1-23 will evaluate recent studies on the radiation dose response for the development of cataracts, also considering the type and severity of the cataracts as well as the dose rate, and; provide guidance on whether existing dose limits to the lens of the eye should be changed in the United States. The results of the SC 1-23 effort will be reflected in the CC 1 report.

In NCRP Report No. 116, discussion of ethical foundations had not been introduced, the medical use of radiation had not been explicitly addressed, and the severity of health outcomes had not been addressed in a context of radiation protection. Key events such as the Fukushima nuclear reactor accident and the ever-rising increase in population exposure to medical use of radiation [e.g., computed tomography examinations, positron emission tomography scans, nuclear medicine procedures] have increased awareness of the importance of radiation protection guidance in the United States.

In 2007, the International Commission on Radiological Protection (ICRP) published an update of their recommendations (Publication 103). Subsequently an ICRP report on tissue reactions (previously called deterministic effects) and noncancer effects was published in 2013 (Publication 118). While the overall goals for radiation protection in the United States are the same as those for the international community, there are some differences in the specific approaches taken to obtain these goals [i.e., in implementing the three pillars of radiation protection of justification, optimization (the as low as reasonably achievable principle), and dose limitation].

The CC 1 Report will point out where there is consistency between current U.S. and international radiation protection guidance and where there are other points of view for issues where the NCRP guidance is different for the United States and the rationale for such differences.

Unique aspects of the manner in which CC 1 will operate include:

  • The first Committee formed under the direct oversight of the Council.
  • All NCRP Program Area Committees (PACs) will participate in the development and review of the recommendations.
  • The 2015 NCRP Annual Meeting was on the topic “Changing Regulations and Radiation Guidance: What Does the Future Hold?” and addressed the rulemaking activities ongoing within U.S. agencies for which the CC 1 guidance should prove useful.
  • An extensive effort will be made to consult with and present to numerous national and international stakeholder groups during both the development and review phases of the CC 1 work.


Write a report to update and expand the basic radiation protection recommendations of NCRP Report No. 116, Radiation Protection Guidance for the United States (1993), applicable to current needs in the United States.

2016 Accomplishments

  • January 26-27, 2016: Co-Chairs and Staff Consultant met to prepare full draft
  • January 30, 2016: Full draft to members for review and assigned actions
  • March 31, 2016: Preliminary draft (dated March 30) distributed to PACs for review and shared with an ICRP Task Group
  • April 10, 2016: Engaged the PACs for initial feedback at the Annual Meeting
  • April 28, 2016: Presentation slides distributed to all members for use at upcoming stakeholder meetings
  • Second quarter 2016: Presentations at stakeholder meetings
  • IRPA: May 9-13 (Capetown)
    ICRP: May 15-17 (Capetown)
    CRCPD: May 18 (Lexington, Kentucky)
    UNSCEAR: June 27-July 1 (Vienna)

  • September 7-8, 2016: Sixth meeting of the full committee
  • Reviewed current draft (dated September 2) following comments from all PACs, stakeholder meetings, and ICRP Task Group<
    Reached consensus of several overarching issues
    Reached consensus on disposition and rework of each section
    Decided schedule of next steps (see Scheduled Activities)

Prior Accomplishments

  • April 1, 2014 (teleconference): Initial discussions with members on updating Report No. 116
  • May 5, 2014 (teleconference): CC 1 Chairs and PAC Chairs discuss PAC involvement
  • July 14, 2014 (opportunistic meeting): Available members at Health Physics meeting
  • September 3-4, 2014: First meeting of full committee
  • PAC Chairs designated as Advisors to CC 1

  • December 9-10, 2014: Second meeting of full committee
  • Made plan to interact with PACs at Annual Meeting (March 15) on draft outline

  • April 1-2, 2015: Third meeting of full committee
  • Preliminary texts discussed; revised outline and updated member assignments

  • June 30, 2015 (teleconference): Review progress on drafting assignments
  • August 26-27, 2015: Fourth meeting of full committee
  • Review of consolidated input (dated August 22); updated assignments

  • December 14-15, 2015: Fifth meeting of full committee
  • Review (section by section) consolidated input (dated November 30)

Scheduled Activities

  • January 30, 2017: Redrafted sections due
  • February 15, 2017: Distribute next draft to CC 1 and PAC 7
  • March 15, 2017: Any further CC 1 and PAC 7 input due
  • March 30, 2017: Updated draft to CC 1 members
  • April 4-5, 2017: Next CC 1 meeting (1.5 d) (at NCRP)






is Vice President Emeritus of NCRP. He was a member of the Council for 24 y, served as Senior Vice President for 9 y, and for 12 y as Scientific Vice President and Chair of Scientific Committee 46 for Operational Radiation Safety. He also was a member of Committee 4 of the International Commission on Radiation Protection from 1997 to 2001. Dr. Kase completed his term as President of the International Radiation Protection Association (IRPA) in May 2012. He served as Vice-President from 2004 to 2008, and chaired the International Congress Program Committee for the 2000 International Congress on Radiation Protection (IRPA 10) in Hiroshima, Japan.

Kenneth Kase began his career in Health Physics at Lawrence Livermore National Laboratory, California, in 1963 and moved to Stanford Linear Accelerator Center (SLAC) in 1969. In 1975 he received a PhD from Stanford University and was appointed to the faculty of Radiation Oncology at the Harvard Medical School. He was appointed Professor of Radiation Oncology at the University of Massachusetts Medical School in 1985. In 1992 he returned to Stanford and was appointed Associate Director of SLAC and Director of the Environment, Safety and Health Division in 1995. He retired from that post in 2001 and from SLAC in 2005. Currently he is associated with Lyncean Technologies, Inc., an research and development firm in Palo Alto, California. He is married to Grady and has two daughters and 6 grandchildren.

Throughout his career Dr. Kase has been active in research activities related to radiation physics and radiation protection, particularly in radiation measurements and the operation of particle accelerators. He has published over 75 papers in peer reviewed journals, co-authored one book, and edited three others on radiation dosimetry.

Dr. Kase served on the Board of Directors of the Health Physics Society (HPS) from 1989 to1992 and 2002 to 2005 and as President of the HPS in 2003 to 2004. He served on the Board of Directors of the American Association of Physicists in Medicine (AAPM) from 1984 to 1991, and as AAPM Treasurer from 1986 to 1991. Dr. Kase also has been an associate editor of Health Physics, Medical Physics, and Radiation Research.

kenneth r. kase , Chair
Cool D


received his Doctorate degree in Radiation Biology from the University of Rochester School of Medicine and Dentistry. He is currently the Technical Executive for Radiation Safety at the Electric Power Research Institute (EPRI), providing advice on EPRI’s Low Dose Radiation research and various aspects of the EPRI the Radiation Safety Program. Before joining EPRI, Dr. Cool served with the U.S. Nuclear Regulatory Commission (NRC) after more than 32 y of service in a number of positions, including as Senior Advisor for Radiation Safety and International Liaison and several roles as a Senior Executive. At NRC, he was responsible for coordinating the wide range of national and international activities related to radiation protection, safety, and security of byproduct materials; decommissioning and waste management; radiation protection policy; and international radiation protection recommendations and standards. Dr. Cool is a Council Member of the National Council on Radiation Protection and Measurements (NCRP), was Co-Chair of NCRP Council Committee 1, is a member of the Main Commission of the International Commission on Radiological Protection (ICRP), Chairman of ICRP Committee 4 on Application of the Commission’s Recommendations, and is a Fellow of the Health Physics Society.

donald a. cool , Co-Chair



is the Radiological Assessment Team Lead at the Centers for Disease Control and Prevention (CDC) serving as subject matter expert in CDC’s radiation emergency preparedness and response activities. He received his BS and PhD degrees in radiation biophysics from the University of Kansas, starting his career as a radiation biologist, and did his postdoctoral research in radiation-induced mutagenesis at Oak Ridge and Los Alamos National Laboratories. He was a senior scientist with the radiological consulting firm of Auxier & Associates before joining CDC in 2002. He has led the development of key national guidance documents including guides for population monitoring and operation of public shelters after radiation emergencies and a number of training products for public health professionals. He is a past president of the Health Physics Society, adjunct associate professor of nuclear and radiological engineering at Georgia Institute of Technology, member of Georgia East Metro Medical Reserve Corps and Gwinnett County Community Emergency Response Team, and provides consultancy to the International Atomic Energy Agency. Since 2014, he has served as member of the U.S. delegation to the United Nations Scientific Committee on the Effects of Atomic Radiation. He is the author of Radiation Threats and Your Safety: A Guide to Preparation and Response for Professionals and Community, a book specifically directed at audiences without radiation protection expertise.

armin ansari



is currently Professor of Medicine at Vanderbilt University School of Medicine, Nashville, Tennessee. He was President of NCRP, Bethesda, Maryland from 2012 to 2018. Dr. Boice is an international authority on radiation effects and served on the Main Commission of the International Commission on Radiological Protection for 20 y and as a U.S. advisor to the United Nations Scientific Committee on the Effects of Atomic Radiation for 25 y. During 27 y of service in the U.S. Public Health Service, Dr. Boice developed and became the first chief of the Radiation Epidemiology Branch at the National Cancer Institute.

Dr. Boice has established programs of research in all major areas of radiation epidemiology, with major projects dealing with populations exposed to medical, occupational, military and environmental radiation. These research efforts have aimed at clarifying cancer and other health risks associated with exposure to ionizing radiation, especially at low-dose levels. Dr. Boice's seminal discoveries and over 500 publications have been used to formulate public-health measures to reduce population exposure to radiation and prevent radiation-associated diseases.

He has delivered the Lauriston S. Taylor Lecture at the NCRP and the Fessinger-Springer Lecture at the University of Texas at El Paso. In 2008, Dr. Boice received the Harvard School of Public Health Alumni Award of Merit. He has also received the E.O. Lawrence Award from the Department of Energy — an honor bestowed on Richard Feynman and Murray Gell-Mann among others — and the Gorgas Medal from the Association of Military Surgeons of the United States. In 1999 he received the outstanding alumnus award from the University of Texas at El Paso (formerly Texas Western College). Dr. Boice directs the Million U.S. Radiation Workers and Veterans Study to examine the lifetime risk of cancer following relatively low-dose exposures received gradually over time.

john d. boice, jr.



is a Clinical Professor of Radiology and Clinical Professor of Radiation Oncology at University of California (UC) Davis School of Medicine. He holds the title of Director Emeritus Medical/Health Physics Programs and retired as Associate Chair of the Department of Radiology in 2018. He is currently Chair of the Board of Directors and Senior Vice President of NCRP. He is an expert on the biological effects, safety and interactions of ionizing and nonionizing radiation and holds multiple radiation detection technology patents. With over 40 y of experience he has served as a subject matter expert and an advisor to government agencies and institutions throughout the nation and around the world including the U.S. Department of Homeland Security, the U.S. Food and Drug Administration’s Center for Devices and Radiological Health, the World Health Organization, and the International Atomic Energy Agency in the areas of ionizing and nonionizing radiation protection, risk communication, medical physics, and radiological emergency medical management. In 2016, Dr. Bushberg was appointed Vice Chair of the Committee on Man and Radiation which is a Technical Committee of the Institute of Electrical and Electronics Engineers’ Engineering in Medicine and Biology Society. Former Commander in the U.S. Naval Reserve, among other assignments CDR Bushberg served as Executive Officer of the Chemical/Biological/Nuclear Technical Unit 120 Pacific, a highly skilled multidisciplinary military emergency response and advisory team based out of the Alameda Naval Air Station in California. Dr. Bushberg is an elected fellow of the American Association of Physicists in Medicine and the Health Physics Society. He is certified by several national professional boards with specific subspecialty certification in radiation protection and medical physics and currently serves as a Director and Vice Chair of the American Board of Medical Physics. In 2014, Dr. Bushberg was awarded the NCRP Warren K. Sinclair Medal for Excellence in Radiation Science and received the Professor John C. Christiansen Distinguished Alumnus award from Purdue University School of Health Sciences in 2016. Prior to coming to the UC Davis Health System as technical director of Nuclear Medicine, Dr. Bushberg was on the faculty of Yale University School of Medicine Department of Radiology where his research was focused on radiopharmaceutical development. Dr. Bushberg has had responsibility for medical postgraduate education in medical physics, radiation (ionizing and nonionizing) biology and protection for more than 30 y. The third edition of the textbook The Essential Physics of Medical Imaging, authored by Bushberg, Seibert, Leidholdt, and Boone, is used extensively by radiology residency programs throughout the United States.

jerrold t. bushberg
Dr. Lawrence Dauer


is Associate Attending Physicist, and Associate Clinical Member in the Departments of Medical Physics and Radiology at Memorial Sloan-Kettering Cancer Center (MSKCC) in New York City. He earned an MS in Health Physics and a PhD in Adult Education. He is certified in comprehensive health physics by the American Board of Health Physics and is past chair of the Radiation Safety Committee of the American Association of Physicists in Medicine (AAPM), past President of the Greater New York Chapter of the Health Physics Society (HPS), Executive Council Member of the Medical Physics Section of the HPS, a Member of the Joint Safety Committee of the Society for Interventional Radiology and the American College of Radiology, past council member of the Radiological and Medical Physics chapter of the AAPM, and a member of editorial and review boards of several scientific journals. He serves as the Chair of the MSKCC Emergency Management Committee, a member of the Radiation Injury Treatment Network. In 2005, he received the Elda E. Anderson Award from HPS. He is a Council member and serves on he Board of Directors of the NCRP. He also serves as a member of the International Commission on Radiological Protection Committee 3 on protection in medicine, a member of the science council for the International Organization for Medical Physics, and was on the program committee for the International Atomic Energy Agency's International Conference on Radiation Protection in Medicine-Setting the Scene for the Next Decade. He serves on the Radiation Advisory Committee of the U.S. Environmental Protection Agency's Science Advisory Board. He has several publications in the topical areas of radiation protection and risks in the fields of detection, radiology, interventional radiology, x-ray imaging, nuclear medicine, and radiation oncology, as well as surgery and medicine.

lawrence t. dauer
FisherD Darrell R. Fisher
Fleming P


Fleming P

is Professor Emerita in Philosophy at Saint Mary’s College, Notre Dame having retired as its Provost. She resides in Logandale, Nevada, one of the areas which experienced fallout from the above ground nuclear testing in the 1950s. She received her master’s and doctorate from Washington University in St. Louis, Missouri. While there, she served as the assistant editor of the Philosophy of Science Journal. She has also served as a consultant to the Organization for Economic Co-operation and Development/Nuclear Energy Agency in Paris, France. Dr. Fleming has published and lectured internationally on the ethical and epistemological issues associated with the disposal of high-level nuclear waste, including the use of expert elicitation methodology in site characterization, waste management and indigenous populations, informed consent in stakeholder populations, and circularity in regulatory policy. Dr. Fleming’s familiarity with ethical concerns regarding the health effects from radiation exposure led to her appointment on the National Academy of Science Committee to Assess the Scientific Information for the Radiation Exposure Screening and Education Program. She served on the Veterans Board on Dose Reconstruction from 2005 to 2013. Her current project is a manuscript on ethics and the wide gamut of nuclear matters.

patricia a. fleming

Kathryn A. Higley


Kathryn A. Higley is a Professor and Head of the School of Nuclear Science and Engineering in the College of Engineering at Oregon State University. Dr. Higley received both her PhD and MS in Radiological Health Sciences from Colorado State University, and her BA in Chemistry from Reed College. She has held both Reactor Operator and Senior Reactor Operator's licenses, and is a former Reactor Supervisor for the Reed College TRIGA reactor. Dr. Higley started her career as a Radioecologist for Portland General Electric. She later worked for Pacific Northwest National Laboratory as a Senior Research Scientist in the area of environmental health physics. Dr. Higley has been at Oregon State University since 1994 teaching undergraduate and graduate classes on radioecology, dosimetry, radiation protection, radiochemistry, and radiation biology.

Her fields of interest include environmental transport and fate of radionuclides, radioecology, radiochemistry, radiation dose assessment, neutron activation analysis, nuclear emergency response, and environmental regulations. She is vice-chair of the International Commission on Radiological Protection's Committee 4 (Application of the Commission’s Recommendations); a fellow of the Health Physics Society and a Certified Health Physicist.

Kathryn A. Higley
Randall N. Hyer

Randall N. Hyer


Randall N. Hyer, Senior Fellow and Assistant Director for Environmental, Health and Safety, Center for Risk Communication.

Dr. Hyer graduated with distinction from the U.S. Naval Academy, and served 12 y on active duty in the U.S. Navy. After earning his medical degree from Duke University, Dr. Hyer served as the 40th Winter-Over Medical Officer and Assistant Officer-in-Charge with Operation DEEP FREEZE at McMurdo and South Pole Stations in Antarctica. Dr. Hyer earned his PhD from Oxford, studying the molecular genetics of juvenile diabetes and helped determine the role of the insulin gene in disease susceptibility.

In 1994, the National Institutes of Health awarded Dr. Hyer the "NIH Outstanding Research Award for Clinical Trainees." Trained in public health at Walter Reed Hospital and Harvard University, Commander Hyer supported four major military operations in the European, African, and southwest Asian theatres to include service as Chief Public Health Advisor for the Kosovo operations and Deputy Surgeon for the Mozambique flood relief operations. Dr. Hyer then spent 4 y at the World Health Organization (WHO) in Geneva as the first WHO Civil Military Liaison Officer and served as part of the WHO's outbreak response team to deadly outbreaks like anthrax, SARS, and avian influenza as well as having organized missions during the 2005 Tsunami response. His experiences with the media in outbreaks and emergencies led him to coauthor the popular WHO handbook, Effective Media Communication During Public Health Emergencies.

Appointed a U.S. Congressional Fellow for Senator Pete V. Domenici (R-New Mexico), he helped introduce legislation to safeguard genetic privacy that eventually became the Genetic Information Non-discrimination Act (GINA) of 2008. In 2005, Dr. Hyer joined Merck Vaccine Division in Global Medical Affairs and Policy. His focus has been the human papilloma virus (HPV) vaccine. In 2009, he was transferred to MSD in Tokyo, Japan.

Randall N. Hyer
Irwin B


Irwin B

leads the Radiological and Toxicological Sciences Program at the Vermont Department of Health and is responsible for radiation protection in medicine and other applications, nuclear facility environmental surveillance, preventive radiological/nuclear detection and emergency preparedness. He is a member of NCRP Council Committee 1 which produced Report No. 180, Management of Exposure to Ionizing Radiation: Radiation Protection Guidance for the United States (2018); Program Area Committee 3, Scientific Committee (SC) 3-1 which wrote Report No. 179, Guidance for Emergency Response Dosimetry; and SC 3-1P2 which wrote Commentary No. 27, Implications of Recent Epidemiologic Studies for the Linear-Nonthreshold Model and Radiation Protection, for implementation of Report No. 179. He was on the 2017 NCRP Annual Meeting Program Committee and presented on the gaps filled in emergency response by the Radiological Operations Support Specialist (ROSS). He helped lead the NCRP Special Session on Radioactive Waste Management at the 2018 Health Physics Society (HPS) Mid-Year Meeting and serves on the 2019 NCRP Annual Meeting Program Committee. Dr. Irwin represents the Conference of Radiation Control Program Directors (CRCPD) on the ROSS Steering Committee leading efforts to train and certify hundreds of ROSS to bolster national radiological and nuclear preparedness. He is a ROSS instructor for Counter Terrorism Operations Support and reinforces his responder capabilities as a Chief Officer of the Vermont Hazardous Materials Response Team, and as a Chief Officer and Emergency Medical Technician for the Bakersfield Volunteer Fire Department. He is a Certified Health Physicist, long-time member of HPS and was previously on the American Board of Health Physics Part II Panel of Examiners. He serves the CRCPD in numerous committees, was on its Board of Directors and served as the Board Chair. Prior to government service, Dr. Irwin worked as Laser Safety Officer and Radiation Safety Officer at Harvard University and the Massachusetts Institute of Technology. He is a consultant on radiofrequency radiation (RFR), laser radiation, extremely low frequency electromagnetic fields, nuclear magnetic resonance fields, and ionizing radiations. He volunteers for Interpol in its international efforts to prevent and detect the smuggling of radiological and nuclear materials. Both his Doctor of Science and Master of Science were earned at the University of Massachusetts Lowell with his dissertation on the health effects of wireless telecommunications RFR exposure. Dr. Irwin started in nuclear power, first as a radiation protection technician on U.S. Navy submarines, guided missile cruisers, and aircraft carriers at Newport News Shipbuilding and Dry Dock Company and then as an instructor and supervisor in radiation protection, chemistry, and nuclear power plant systems and operations training at commercial facilities.

william e. irwin



is currently Professor Emeritus and Clinical Professor at the Department of Radiology at the University of New Mexico School of Medicine. He was chairman of the department for 18 y from 1994 to 2003. He is currently in the Radiology and Nuclear Medicine Service at the New Mexico Federal Regional Medical Center.

He graduated with a BA in Mathematics from Columbia University and in 1970 he received his MD from Thomas Jefferson University. He performed a rotating internship at the University of Chicago and subsequently completed a Radiology and Nuclear Medicine Residency at Massachusetts General Hospital. He received an MS in Public Health from Harvard University in 1975. He is a fellow of both the American College of Radiology and the American College of Nuclear Physicians. He is board certified in both radiology and nuclear medicine.

Dr. Mettler has authored over 360 scientific publications including 20 textbooks, and holds four patents. The books are on Medical Management of Radiation Accidents, Medical Effects of Ionizing Radiation and Radiology and Nuclear Medicine. He was a Scientific Vice President of NCRP and remains a member. He has chaired several committees for the Institute of Medicine/National Research Council and is a member of the Nuclear and Radiation Studies Board of the National Academies. He is also an academician of the Russian Academy of Medical Sciences. Dr. Mettler has been listed in "The Best Doctors in America" since 1994 as an expert in both nuclear medicine and radiation injury. He has been a certifying examiner for the American Board of Radiology for 30 y.

He was the United States Representative to the United Nations Scientific Committee on the Effects of Atomic Radiation 28 y. He is an Emeritus Commissioner of the International Commission on Radiation Protection (ICRP). He was the Health Effects Team Leader of the International Chernobyl Project. He has served as an expert on radiation effects and accidents for the Centers for Disease Control and Prevention, the World Health Organization, the International Atomic Energy Agency, the International Agency on Research on Cancer, and for the Costa Rican, Peruvian, Panamanian, Polish governments. He was a co-author of the NCRP and ICRP reports on radiation protection during radiological terrorism and has been a member of multiple subgroups on radiological terrorism for the U.S. Department of Homeland Security. He is currently a health advisor to the Japanese Cabinet for the Fukushima nuclear disaster.

fred a. mettler, jr.
Miller D


Miller D

is Chief Medical Officer at the U.S. Food and Drug Administration's (FDA) Center for Devices and Radiological Health. He earned a BA from Yale University and an MD from New York University, and completed a residency in diagnostic radiology and a fellowship in interventional radiology at New York University Medical Center. He is board certified in Diagnostic Radiology and Vascular and Interventional Radiology. Prior to joining FDA, he practiced interventional radiology at the National Institutes of Health and the National Naval Medical Center in Bethesda, Maryland.

Dr. Miller was elected to NCRP in 2006. He currently serves on the Board of Directors, as Chair of Program Area Committee 4 (Radiation Protection in Medicine), and as a member of several Scientific Committees. He is an author of NCRP Reports No. 168 and No. 172 and Statement No. 11. He served as a member of International Commission on Radiological Protection (ICRP) Committee 3 (Protection in Medicine) from 2010 to 2017. He is an author of ICRP Publications 117, 120, 135, and 139. He was Vice-Chair for the U.S. Environmental Protection Agency’s Federal Guidance Report No. 14, is a consultant to the International Atomic Energy Agency, and is a member of the World Health Organization’s Core Group of Experts on Radiation Protection of Patients and Staff.

Dr. Miller was Professor of Radiology at the Uniformed Services University in Bethesda, MD from 1993 to 2012 and has served as Associate Editor of Radiology and the Journal of Vascular and Interventional Radiology. He is an author of more than 185 papers in peer-reviewed journals and more than 30 book chapters and reports, is a Fellow of the Society of Interventional Radiology (SIR) and the American College of Radiology (ACR) and is an Honorary Member of the American Association of Physicists in Medicine. He chaired SIR’s Safety and Health Committee from 1999 to 2011 and the ACR Guidelines Interventional Committee from 2008 to 2012. His research interests have centered on radiation protection in medicine.

donald l. miller



is currently a Special Government Employee (Expert) with the Radiation Protection Division of the U.S. Environmental Protection Agency (EPA). He was previously the Associate Director for Health for the National Health and Environmental Effects Research Laboratory of EPA. He also served as Director of the Environmental Carcinogenesis Division at EPA and as senior science adviser at the Chemical Industry Institute of Toxicology. He has been employed at the Biology Division of the Oak Ridge National Laboratory and has served as Associate Director for the Oak Ridge–University of Tennessee Graduate School for Biomedical Sciences. Dr. Preston's research and current activities have focused on the mechanisms of radiation and chemical carcinogenesis and the approaches for incorporating these types of data into cancer risk assessments.

Dr. Preston currently serves on two NCRP committees and is a member of the National Academy of Sciences Nuclear and Radiation Studies Board and a member of an Office of Science and Technology Policy Committee on Low Dose Radiation Research. Dr. Preston was chair of Committee 1 of the International Commission on Radiological Protection (ICRP), a member of the ICRP Main Commission, and the Representative and a member of the U.S. delegation to the United Nations Scientific Committee on the Effects of Atomic Radiation. He served as Chair for the National Research Council's Committee to Assess the Scientific Information for the Radiation Exposure Screening and Education Program and on the Task Group on the Biological Effects of Space Radiation. He is an associate editor of Environmental and Molecular Mutagenesis and Chemico-Biological Interactions. Dr. Preston has had more than 200 peer-reviewed papers and chapters published. He received his BA and MA from Peterhouse, Cambridge University, England, in genetics and his PhD from Reading University, England, in radiation genetics.

r. julian preston



is a Professor of Radiation Oncology and Radiology at Northwestern University Feinberg School of Medicine in Chicago. She and her group have been involved in studies of molecular consequences of radiation exposure, late tissue effects associated with radiation, and the use of radiation-inducible nanomaterials for cancer imaging and therapy. Dr. Woloschak also teaches radiation biology to radiation oncology and radiology residents, cardiology trainees, and graduate students and manages the Advanced Grant Writing Workshop for the Radiological Society of North America (RSNA). She earned her PhD in medical sciences from the University of Toledo (Ohio) and did post-doctoral studies in molecular biology at the Mayo Clinic. She has served on review panels for various federal agencies including the National Institutes of Health, the National Aeronautics and Space Administration, the U.S. Department of Energy, RSNA, the U.S. Army Medical Research and Materiel Command, and others. She is currently an associated editor for Radiation Research, the International Journal of Radiation Biology, PLOS One, and Nanomedicine. She is Vice President of NCRP Program Area Committee 1, has served on organizational committees for several NCRP meetings, and has been involved in committees for several NCRP reports. She also served as Vice-President of the Radiation Research Society.

gayle e. woloschak



is President of Risk Assessment Corporation. He is a graduate of the U.S. Naval Academy and served in the U.S. Navy Nuclear Submarine Program and retired a Rear Admiral in the U.S. Naval Reserve in 1999. Dr. Till received an MS from Colorado State University in 1972 and a PhD from the Georgia Institute of Technology in 1976. In 1977 Dr. Till formed Risk Assessment Corporation to perform research on radionuclides released to the environment by nuclear facilities. His career has focused on the development of methods to estimate dose and risk to humans from radionuclides and chemicals in the environment. He has served on committees for the National Academy of Sciences, the International Commission on Radiological Protection, and the International Atomic Energy Agency. He has published widely in the open literature including the first textbook on radiological risk assessment published by the U.S. Nuclear Regulatory Commission in 1983 and an updated version, Radiological Risk Assessment and Environmental Analysis (2008).

In 1995, Dr. Till received the E.O. Lawrence Award from the U.S. Department of Energy in the field of Environmental Science and Technology. He presented the Lauriston S. Taylor Lecture at the annual meeting of the NCRP in 2013. In addition to his scientific work, Dr. Till also owns and operates his family farm, growing corn and soybeans near Neeses, South Carolina.

john e. till , Liaison PAC 7
Dr. Stanley James Adelstein, M.D., Ph.D.


Dr. Stanley James Adelstein, M.D., Ph.D.

is Paul C. Cabot Distinguished Professor of Medical Biophysics (Emeritus). He received his MD degree from Harvard Medical School and his PhD in Biophysics from the Massachusetts Institute of Technology. He did postdoctoral work at Cambridge University and at the Johns Hopkins Hospital. In the 1970s he organized nuclear medical units at Peter Bent Brigham (now Brigham and Women's) Hospital, Children's Hospital of Boston, and Dana-Farber Cancer Institute, which were affiliated to become a teaching, clinical and research organization known as the Joint Program in Nuclear Medicine.

Dr. Adelstein served as the Executive Dean for Academic Programs at Harvard Medical School from 1978 to 1997. He is a member of the Institute of Medicine and recipient of the Society of Nuclear Medicine and Molecular Imaging's Hermann Blumgart, Paul Aebersole, and George de Hevesy Awards. His research has focused on the biophysical effects of highly ionizing radiation emitted by radionuclides. Dr. Adelstein was elected to NCRP in 1978, served on several report-writing committees, and was Vice President of NCRP from 1983 to 2002.

s. james adelstein , Consultant
Andersen R

Ralph L. Andersen

Andersen Rrecently retired from the Nuclear Energy Institute as the Senior Director of Radiation Safety and Environmental Protection. His 45 y career spans a variety of positions in the areas of health physics; low-level radioactive waste management; and environmental protection across the sectors of nuclear energy, education, medical, industrial, research, and regulation. Mr. Andersen continues to practice as a certified health physicist and serves as an advisor to the Electric Power Research Institute on low-dose radiation research. He has a BA from the University of Maryland and completed graduate studies in radiology and radiation biology at Colorado State University.

Ralph L. Andersen , Consultant
Boyd M

Michael A. Boyd

Boyd M

is the Director of the Center for Science and Technology in the U.S. Environmental Protection Agency’s Office of Radiation and Indoor Air/Radiation Protection Division. The Center is responsible for the development of radiation dose and risk assessment guidance and for providing technical support for radiation protection policy issues. Mr. Boyd is also the co-chair of the Federal Guidance Subcommittee of the Interagency Steering Committee on Radiation Standards. He is a member of the NCRP’s PAC 5 and was recently elected to the NCRP Board of Directors. He is a member of the International Commission on Radiological Protection (ICRP) Committee 4 and chairs ICRP Task Group 98 on Application of the Commission’s Recommendations to exposures resulting from contaminated sites from past industrial, military and nuclear activities. Since 2015, he has chaired the Organisation for Economic Cooperation and Development/Nuclear Energy Agency's Committee on Radiological Protection and Public Health. Mr. Boyd is an active member of the Health Physics Society and is a delegate to the International Radiation Protection Association where he is currently a member of its International Congress Program Committee for IRPA 15, which will be held in Seoul, Korea in May 2020. He has a BS in Biology and MS in Public Health from the University of North Carolina at Chapel Hill.

Michael A. Boyd , Consultant



is a consultant, currently concentrating on the preparation of scientific reports produced by NCRP in all subject areas. From 1982 to 1995, he was Director, Office of Health Physics at the Center for Devices and Radiological Health, U.S. Food and Drug Administration. He also served in a number of scientific and management positions related to radiation protection during his 33 y career as a Commissioned Officer in the U.S. Public Health Service, from 1962 to 1995. He received a BS in Chemical Engineering (University of Maryland, 1961), an MS in Environmental Engineering (Rensselaer Polytechnic Institute, 1966) and a PhD in Nuclear Engineering (University of Maryland, 1971). His technical work has concentrated on radiation dosimetry, particularly with regard to x rays used for medical diagnosis, epidemiological studies of exposed populations, and public radiation emergencies.

He is a Distinguished Emeritus Member of NCRP (after serving as a Council member for 18 y), and an Emeritus member of Committee 3 (Protection in Medicine) of the International Commission on Radiological Protection [after serving on Committee 3 for 28 y (1985 to 2013)]. He was also a member of the International Commission on Radiation Units and Measurements report committee that produced Report 74, Patient Dosimetry for X Rays Used in Medical Imaging.

marvin rosenstein , Staff Consultant
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Last modified: June 2, 2015