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Updated effective doses in radiology.

Jorge Vilar-Palop1, José Vilar, Ildefonso Hernández-Aguado

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Summary
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This study updates typical effective doses for top adult and pediatric imaging tests using ICRP60 and ICRP103 radiation weighting. Findings reveal similar pediatric CT doses to adults, with lower fluoroscopy doses, and highlight differences from prior data.

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Area of Science:

  • Radiological Sciences
  • Medical Physics
  • Public Health

Background:

  • Accurate radiation dosimetry is crucial for patient safety and population exposure estimation.
  • Updated effective dose values are needed due to evolving imaging techniques and radiation protection standards.
  • International Commission on Radiological Protection (ICRP) 60 and 103 provide different weighting factors impacting dose calculations.

Purpose of the Study:

  • To systematically review recent literature and provide updated effective dose values for common adult and pediatric radiological examinations.
  • To compare dose values calculated using both ICRP 60 and the more recent ICRP 103 weighting systems.
  • To establish a reliable evidence base for evaluating patient effective doses and population exposures.

Main Methods:

  • Systematic literature search of Medline, Embase, and Cochrane Library Plus for studies from 2007 onwards.
  • Inclusion of studies from scientific or governmental organizations, analyzing year, type, country, method, and sample size.
  • Calculation of mean effective dose, minimum, maximum, and standard deviation from 378 dose values across 20 procedures.

Main Results:

  • A total of 378 effective dose values were compiled from 27 articles and 5 web references.
  • 280 values (74%) used ICRP 60, while 98 values (26%) used ICRP 103.
  • Pediatric CT effective doses were similar to adults, except for CT Trunk; fluoroscopy doses were consistently lower. Current data differed from previous published evidence.

Conclusions:

  • This study provides the most current evidence on effective doses for typical radiological examinations.
  • The findings are valuable for assessing individual patient exposures and estimating population average radiation doses.
  • Results support recommendations for radiation protection and dose evaluation in diagnostic radiology.