1. U.S. National Research Council Committee to Assess Health Risks from Exposure to Low Level of Ionizing Radiation. Health risks from exposure to low levels of ionizing radiation. Beir VII phase 2. National Academies Press, Washington, D.C. 2006.
2. National Council on Radiation Protection and Measurements. Ionizing Radiation Exposure of the Population of the United States., NCRP Report No. 160. NCRP, Bethesda, Maryland. 2006.
3. Nuclear Medicine Exposure in the United States - 2005–2007: Preliminary Results;Mettler;Semin Nucl Med,2008
4. NCRP Report Number 160: its significance to medical imaging;Mahesh;J Am Coll Radiol,2009
5. Computed tomography-an increasing source of radiation exposure;Brenner;N Engl J Med,2007