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Cumulative radiation exposure in children with cystic fibrosis

R O'Reilly1, S Ryan, V Donoghue

  • 1Children's University Hospital, Temple St, Dublin 1. roreilly@imperial.ac.uk

Irish Medical Journal
|July 30, 2010
PubMed

Insights

Children with cystic fibrosis (CF) accumulate significant radiation doses from medical imaging, averaging 6.2 mSv. Radiation exposure increases with age and CT scans, highlighting the need to minimize unnecessary imaging in CF patients.

Area of Science:

  • Pediatric Radiology
  • Pulmonology
  • Medical Physics

Background:

  • Children with cystic fibrosis (CF) require frequent medical imaging.
  • Radiation exposure from diagnostic imaging poses a cumulative risk, particularly in pediatric populations.
  • Increasing life expectancy in CF patients necessitates long-term risk assessment.

Purpose of the Study:

  • To calculate the cumulative radiation dose in pediatric patients with CF.
  • To identify factors influencing radiation dose accumulation.
  • To assess the relationship between radiation dose and clinical outcomes.

Main Methods:

  • Retrospective analysis of 77 pediatric CF patients.
  • Inclusion of data from 1757 imaging studies (radiographs and CT scans).
  • Calculation of average cumulative radiation dose (mSv) per patient.

Main Results:

  • Average cumulative radiation dose was 6.2 mSv.
  • Dose increased with patient age and number of CT scans.
  • Higher doses were observed in patients with meconium ileus; no correlation with lung function or microbiology.

Conclusions:

  • Pediatric CF patients receive substantial cumulative radiation doses.
  • Age and CT scan frequency are key determinants of radiation exposure.
  • Minimizing unnecessary radiation is crucial given the susceptibility of children and increasing CF survival rates.

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