Skip to main content

Radiation doses in young ICU patients: a cause for concern?


The aim of this study was to quantify the radiation dose in young ICU patients to determine if it approached a clinically significant level. Ionising radiation is a well-recognised risk factor for development of cancer. The risk is dose-related and there is no lower threshold at which the dose can be considered clinically irrelevant. The availability of computed tomography (CT) scanning has led to a significant increase in exposure to ionising radiation of patients over the last decade. Children and young adults are particularly at risk. This is partly because there is a longer lifetime in which radiation effects may be manifest but also because children are up to 10 times more sensitive to radiation than adults. In view of these issues it is important to quantify the risk to young ICU patients.


The general ICU database was examined from 1 March 2010 to 1 March 2011. The overall radiation exposure was quantified using the cumulative effective radiation dosage (CED) in millisieverts (mSv). The CED was calculated for all of the procedures performed during the stay in the ICU using average procedure-specific effective doses published by the UK National Radiation Protection Board. A cohort of patients <30 years of age were selected for subanalysis.


There were 403 patients admitted to the general ICU during the period of interest. The number of patients <30 years of age was 75 with a mean age of 19 (range 0.5 to 30 years). The mean CED was 10.84 mSv (SD = 15.08) with 10 patients receiving >30 mSv. The mean CED for patients who did not undergo CT examination was 0.063 mSv (n = 31, SD = 0.062). Trauma patients received a far higher dose (21.86 mSv) than either medical (3.1 mSv) or postoperative surgical (3.96 mSv) admissions.


CT is a useful and necessary tool in our diagnostic and therapeutic armoury. However, our results show that young patients can potentially be exposed to significant doses of ionising radiation in an ICU setting mainly due to CT. In view of the lifetime risk of cancer to these patients we should try to minimise radiation exposure by more judicious utilisation of CT and by use of other imaging modalities.


  1. 1.

    Hart D, Wall B: Radiation Exposure of the UK Population from Medical and Dental X-ray Examinations. Chilton: National Radiological Protection Board. 2002.

    Google Scholar 

  2. 2.

    Kinsella SM, et al.: Kidney Int. 2010, 78: 789-793. 10.1038/ki.2010.196

    Article  PubMed  Google Scholar 

  3. 3.

    Dawson P: Br J Radiol. 2004,77(Spec No 1):S10-S13.

    Article  PubMed  Google Scholar 

  4. 4.

    Slovis T: Radiology. 2002, 223: 5-6. 10.1148/radiol.2231012100

    Article  PubMed  Google Scholar 

  5. 5.

    Cardis E, et al.: Radiat Res. 2007, 167: 396-416. 10.1667/RR0553.1

    CAS  Article  PubMed  Google Scholar 

  6. 6.

    Cascade PN, et al.: AJR Am J Roentgenol. 1998, 1770: 561-564.

    Article  Google Scholar 

Download references

Author information



Rights and permissions

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Reprints and Permissions

About this article

Cite this article

O'Leary, R., Houlihane, C., McLaughlin, P. et al. Radiation doses in young ICU patients: a cause for concern?. Crit Care 16, P522 (2012).

Download citation

  • Published:

  • DOI:


  • Compute Tomography
  • Radiation Exposure
  • Effective Dose
  • Trauma Patient
  • Lower Threshold