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Blast Quantification Using Hopkinson Pressure Bars
09:41

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BOMAB phantom variability: do small dimensional changes matter?

Gary H Kramer1, Barry M Hauck, Shannon Dang

  • 1Human Monitoring Laboratory, Radiation Surveillance and Health Assessment Division, Radiation Protection Bureau, Ottawa, ON, Canada. gary_h_kramer@hc-sc.gc.ca

Health Physics
|May 13, 2008
PubMed
Summary
This summary is machine-generated.

Manufacturing variations in Body-Organ-Muscle-and-Bone (BOMAB) phantoms have minimal impact (<5%) on counting system performance. This study confirms that dimensional differences in phantoms do not significantly affect whole body counter accuracy across various geometries.

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Published on: September 7, 2018

Area of Science:

  • Medical Physics
  • Radiation Detection and Measurement

Background:

  • The Human Monitoring Laboratory (HML) utilizes Body-Organ-Muscle-and-Bone (BOMAB) phantoms for calibration and performance assessment.
  • Consistent characterization of BOMAB phantoms reveals slight, inherent variations in their physical dimensions due to manufacturing processes.

Purpose of the Study:

  • To investigate the impact of minor dimensional variances in BOMAB phantoms on counting system performance.
  • To compare simulation results against industry standards for phantom compliance.
  • To assess the significance of these variations across different whole body counting geometries.

Main Methods:

  • Utilized Monte Carlo simulations to model phantom dimensions and detector responses.
  • Evaluated three distinct counting geometries: HML's scanning detector, StandFast, and W-chair whole body counters.
  • Quantified the performance changes attributable to dimensional variations.

Main Results:

  • The effect of small dimensional variations on phantom performance was found to be minor, consistently below 5%.
  • Simulations indicated negligible impact on the accuracy of all three tested counting geometries.
  • Individual non-compliant phantom sections did not significantly compromise overall system performance.

Conclusions:

  • Minor deviations in BOMAB phantom manufacturing dimensions have a negligible effect on the performance of whole body counting systems.
  • The findings provide reassurance regarding the robustness of counting system calibrations despite inherent manufacturing tolerances.
  • Current industry standards for phantom dimensions may allow for slight variances without compromising measurement accuracy.