European Radiology

, Volume 18, Issue 9, pp 1980–1986 | Cite as

CT radiation dose in children: a survey to establish age-based diagnostic reference levels in Switzerland

  • Francis R. Verdun
  • Daniel Gutierrez
  • John Paul Vader
  • Abbas Aroua
  • Leonor Trinidad Alamo-Maestre
  • François Bochud
  • François Gudinchet


This work aimed at assessing the doses delivered in Switzerland to paediatric patients during computed tomography (CT) examinations of the brain, chest and abdomen, and at establishing diagnostic reference levels (DRLs) for various age groups. Forms were sent to the ten centres performing CT on children, addressing the demographics, the indication and the scanning parameters: number of series, kilovoltage, tube current, rotation time, reconstruction slice thickness and pitch, volume CT dose index (CTDIvol) and dose length product (DLP). Per age group, the proposed DRLs for brain, chest and abdomen are, respectively, in terms of CTDIvol: 20, 30, 40, 60 mGy; 5, 8, 10, 12 mGy; 7, 9, 13, 16 mGy; and in terms of DLP: 270, 420, 560, 1,000 mGy cm; 110, 200, 220, 460 mGy cm; 130, 300, 380, 500 mGy cm. An optimisation process should be initiated to reduce the spread in dose recorded in this study. A major element of this process should be the use of DRLs.


Computed tomography Paediatrics Radiation dosimetry Radiation protection Diagnostic reference levels 



The authors gratefully acknowledge financial support from the Swiss National Science Foundation (Grant no. 3200B0-105951) and are thankful to the members of SSPR, in particular: Drs G. Eich, S. Hanquinet, J.-M. Girard, A. Racle, G. Remsei, T. Schraner, P. Waibel, R. Wolf, Mme M. Wyttenbach, M. P. Brégis, and A. Devaud)


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Copyright information

© European Society of Radiology 2008

Authors and Affiliations

  • Francis R. Verdun
    • 1
  • Daniel Gutierrez
    • 1
  • John Paul Vader
    • 2
  • Abbas Aroua
    • 1
  • Leonor Trinidad Alamo-Maestre
    • 3
  • François Bochud
    • 1
  • François Gudinchet
    • 3
  1. 1.University Institute for Radiation Physics (IRA–DUMSC)CHUV and University of LausanneLausanneSwitzerland
  2. 2.University Institute of Social and Preventive Medicine (IUMSP–DUMSC)CHUV and University of LausanneLausanneSwitzerland
  3. 3.University Hospital of Lausanne (CHUV), Department of Radiodiagnostic and Interventional RadiologyCHUV and University of LausanneLausanneSwitzerland

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