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Efficiency calibration of a whole-body-counting measurement setup using a modular physical phantom
A L Lebacq1, M Bruggeman, F Vanhavere
1Belgian Nuclear Research Centre, SCK•CEN, Boeretang, Belgium. anne.laure.lebacq@sckcen.be
Radiation Protection Dosimetry
|January 11, 2011
Summary
A new modular phantom, the Emma phantom, was developed for whole-body counting (WBC) laboratories. This system offers a safer and more efficient calibration of detector systems for in vivo radionuclide monitoring.
Area of Science:
- Medical Physics
- Radiation Detection and Measurement
- Nuclear Medicine
Background:
- Physical phantoms are essential for calibrating whole-body counting (WBC) systems used in internal radionuclide monitoring.
- Traditional phantoms, like the bottle manikin absorption phantom, presented limitations including leakage risks and significant radioactive waste generation.
- SCK•CEN's Anthropogammametry laboratory required a more suitable phantom for accurate detector system calibration.
Purpose of the Study:
- To introduce and present the novel Emma phantom, designed for calibrating whole-body counting (WBC) detector systems.
- To detail the modular design and construction of the Emma phantom using Epramid blocks and sealed line sources.
- To demonstrate the application of the Emma phantom in calibrating the SCK•CEN WBC setup for various body geometries.
Main Methods:
- Development of the Emma phantom using modular Epramid blocks (cylinders, cuboids, elliptical cylinders) to allow for diverse body geometries.
- Incorporation of sealed line sources within the Epramid blocks to simulate radionuclide distribution.
- Utilization of the Emma phantom to calibrate the SCK•CEN whole-body counting (WBC) setup, obtaining efficiency calibration curves.
Main Results:
- The Emma phantom was successfully constructed and utilized for calibrating the SCK•CEN WBC system.
- Efficiency calibration curves were generated for multiple body geometries simulated by the modular phantom.
- The performance and applicability of the Emma phantom for in vivo monitoring calibration were evaluated.
Conclusions:
- The Emma phantom represents a significant advancement over previous phantoms, addressing safety and waste concerns.
- Its modularity and design facilitate realistic human body representation for accurate detector calibration in WBC laboratories.
- The successful calibration of the SCK•CEN WBC setup demonstrates the Emma phantom's effectiveness for in vivo radionuclide monitoring.
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