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Home | Current Program | PAC 4 | SC 4-3SC 4-3: Diagnostic Reference Levels in Medical Imaging: Recommendations for Application in the United States
NCRP Scientific Committee 4-3, "Diagnostic Reference Levels in Medical Imaging: Recommendations for Application in the United States" held its first meeting at NCRP Headquarters in Bethesda, Maryland on March 23-24, 2009. Diagnostic reference levels are similar to investigational levels and provide guidance for the medical imaging community regarding the appropriateness of patient radiation doses for specific x-ray projections and procedures. The Committee is chaired by James Brink, M.D. from Yale University and includes diagnostic radiologists, a pediatric radiologist, a dental radiologist, medical physicists, a radiation oncologist, and a representative from the FDA's Nationwide Evaluation of X-Ray Trends (NEXT) program, plus an NCRP Technical Consultant. The report will contain a discussion of the history and applications of diagnostic reference levels (DRLs) in the United States, Europe, and the rest of the world. A number of examinations will be selected for the development of reference levels, including computed tomography (CT), interventional radiology, and nuclear medicine. DRLs will be selected based on patient dose surveys and data available through various organizations including FDA and the American College of Radiology, as well as from peer-reviewed publications. At the most recent meeting the status of draft sections of the report were reviewed. About one quarter of the text is presently in draft form. A teleconference is scheduled for March 2, 2010 and a meeting of the Committee in Bethesda will be scheduled in mid-April.
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