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Proposed Diagnostic Reference Levels for Frequently Performed Paediatric Radiographic Examinations.

Edel Doyle1, Matthew R Dimmock2,3, Kam L Lee4

  • 1Monash University, Department of Forensic Medicine, Melbourne, Victoria, Australia.

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|February 13, 2025
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Summary
This summary is machine-generated.

Australia now has proposed weight-based paediatric diagnostic reference levels (DRLs) for general radiography, aiding radiation dose optimisation in children. This study established crucial Australian reference values for common X-ray imaging procedures.

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Area of Science:

  • Medical Imaging Physics
  • Radiological Protection
  • Paediatric Radiology

Background:

  • Diagnostic Reference Levels (DRLs) are essential for optimising radiation doses in medical imaging.
  • International guidelines recommend weight-stratified DRLs for paediatric patients.
  • Australia has lacked published paediatric DRLs for general radiography.

Purpose of the Study:

  • To collect radiation dose metrics for common radiographic projections in Australian children.
  • To propose weight-based paediatric DRLs for general radiography in Australia.

Main Methods:

  • Data on patient weight, age, and X-ray parameters were collected from five Australian centres.
  • Facility Reference Levels (FRLs) were calculated as medians per X-ray unit.
  • Local DRLs (LDRLs) were determined as the 75th percentiles of FRLs across multiple units.

Main Results:

  • Chest, wrist, abdomen, elbow, and foot were the most frequently X-rayed paediatric body parts.
  • Proposed LDRLs varied from 4 mGy•cm² (oblique hand, 5-15 kg) to 884 mGy•cm² (AP pelvis, 50-80 kg).

Conclusions:

  • Weight-based DRLs for paediatric radiography were successfully estimated in Australia.
  • These proposed LDRLs provide essential reference values for radiation dose optimisation in paediatric imaging.