1. National Council on Radiation Protection and Measurements. Ionizing radiation exposure of the population of the United States. Report No. 160. Bethesda, Maryland: National Council on Radiation Protection and Measurements; 2009.
2. Radiation Experience Data (RED). Documentation and results of the 1980 survey of U.S. hospitals. HHS Publication FDA 86-8253,1985
3. Diagnostic imaging procedure volume in the United States;Johnson;Radiology,1983
4. Patient dosage in computed tomography;McCullough;Radiology,1978
5. A method for describing the doses delivered by transmission x-ray computed tomography;Shope;Med Phys,1981