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Variation in pediatric head CT imaging protocols in Washington state.

Kalpana M Kanal1, Monica S Vavilala, Colin Raelson

  • 1Department of Radiology, University of Washington, Seattle, Washington 98195-7987, USA. kkanal@u.washington.edu

Journal of the American College of Radiology : JACR
|April 5, 2011
PubMed
Summary

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Pediatric head CT imaging protocols and radiation doses vary significantly across trauma centers in Washington state. This study highlights inconsistencies in dose reduction strategies and effective radiation exposure for children.

Area of Science:

  • Radiology
  • Pediatric Imaging
  • Radiation Dose Optimization

Background:

  • Computed tomography (CT) is crucial for diagnosing pediatric head trauma.
  • Standardization of pediatric head CT protocols is essential for consistent care and radiation safety.
  • Existing research indicates potential variability in imaging practices across different healthcare facilities.

Purpose of the Study:

  • To investigate the variations in pediatric head trauma CT imaging protocols within Washington state.
  • To analyze differences in protocols based on trauma center levels.
  • To assess radiation dose metrics and dose reduction strategies employed in pediatric head CT.

Main Methods:

  • A web-based survey was distributed to trauma-designated hospitals in Washington state.

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  • Data collected included pediatric head trauma volumes, CT scanner types, and specific imaging protocol parameters.
  • Analysis focused on variations in trauma volumes, dose reduction techniques, and estimated effective radiation doses across trauma center levels.

    • Main Results:

    • A 76% response rate was achieved from surveyed trauma centers.
    • Most facilities (44/47) reported using pediatric-specific head CT protocols.
    • Significant disparities were observed: lower-level trauma centers (3, 4, & 5) were less likely to use dose reduction strategies, had higher mAs values, and adopted these strategies later compared to higher-level centers (1 & 2).
    • A more than 10-fold variation in estimated median effective dose for infants was found within Level 4 trauma centers.

    Conclusions:

    • There is substantial variability in pediatric head CT imaging protocols and associated radiation doses both within and between different trauma center levels in Washington state.
    • These findings underscore the need for standardized protocols to ensure optimal radiation safety and diagnostic quality in pediatric head trauma imaging.