1. National Council on Radiation Protection & Measurements. NCRP Report No. 160: ionizing radiation exposure of the population of the United States. 2009. Bethesda: NCRP.
2. Berrington de González A, Mahesh M, Kim KP, Bhargavan M, Lewis R, Mettler F, Land C. Projected cancer risks from computed tomographic scans performed in the Unites States in 2007. Arch Intern Med. 2009. 169:2071–2077.
3. Brenner DJ, Hall EJ. Computed tomography: an increasing source of radiation exposure. N Engl J Med. 2007. 357:2277–2284.
4. Pearce MS, Salotti JA, Little MP, McHugh K, Lee CS, Kim KP, Howe NL, Ronckers CM, Rajaraman P, Sir Craft AW, et al. Radiation exposure from CT scans in childhood and subsequent risk of leukaemia and brain tumours: a retrospective cohort study. Lancet. 2012. 380:499–505.
5. International Commission on Radiological Protection. 1990 recommendations of the International Commission on Radiological Protection: ICRP publication 60. 1991. New York: ICRP.
6. International Commission on Radiological Protection. The 2007 recommendations of the International Commission on Radiological Protection: ICRP Publication 103. 2007. New York: ICRP.
7. International Atomic Energy Agency. International basic safety standards for protection against ionizing radiation and the safety of radiation sources: IAEA safety series No. 115. 1996. Vienna: IAEA;279–280.
8. Linet MS, Slovis TL, Miller DL, Kleinerman R, Lee C, Rajaraman P, Berrington de Gonzalez A. Cancer risks associated with external radiation from diagnostic imaging procedures. CA Cancer J Clin. 2012. doi:
10.3322/caac.21132.
9. Rehani MM, Frush DP, Berris T, Einstein AJ. Patient radiation exposure tracking: worldwide programs and needs: results from the first IAEA survey. Eur J Radiol. 2012. 81:e968–e976.
10. Korea Food & Drug Administration. Guideline for diagnostic reference level in CT examination in Korea: radiation safety series no. 19. 2009. Seoul: Korea Food & Drug Administration.
11. Korea Food & Drug Administration. Guideline for diagnostic reference level in general radiology in Korea: radiation safety series no. 30. 2012. Seoul: Korea Food & Drug Administration.