Development and calibration of a portable detection device for in vivo measurement of high-energy photon emitters incorporated by humans

Authors

  • Alexandre Barbosa Soares Instituto de Radioproteção e Dosimetria
  • Mayara Nascimento Arbach Instituto de Radioproteção e Dosimetria
  • Éder Augusto de Lucena Instituto de Radioproteção e Dosimetria
  • Ana Letícia Almeida Dantas Instituto de Radioproteção e Dosimetria
  • Bernardo Maranhão Dantas Instituto de Radioproteção e Dosimetria

DOI:

https://doi.org/10.15392/bjrs.v6i2A.438

Keywords:

Internal monitoring, Internal dosimetry, Bioassay

Abstract

This work presents the evaluation of the applicability and sensitivity of a portable detection device specially designed for in vivo measurement of high-energy photon emitters in the human body. The calibration was performed at the In-Vivo Monitoring Laboratory of the IRD. The equipment consists of a lead-collimated NaI (Tl) 3”x3” scintillation detector assembled on a tripod. The detector and its compact associated electronics are connected via USB cable to a portable PC. Spectrum acquisition and analysis is controlled by specific commercially available software.  The calibration was performed using a standard liquid source of 152Eu contained in 3 L polyethylene bottles. The evaluation of the system is based on the estimation of the minimum committed effective doses associated to the minimum detectable activities, calculated using current biokinetic and dosimetric models available in the literature. The dose detection limits for selected radionuclides of interest in an emergency scenario have shown to be far below 1 mSv allowing the system to be useful in accident situations.

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Author Biography

Alexandre Barbosa Soares, Instituto de Radioproteção e Dosimetria

Físico Médico/Dosimetria Interna.

References

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DANTAS, B. M. et al. A Mobile Bioassay Laboratory for the Assessment of Internal Doses Based on Vivo and in Vitro Measurements. Health Physics Society, v. 99, p. 449-452, 2010.

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BERTELLI, L., Melo, D. R.; Lipsztein, J., Cruz-Suarez, R. AIDE – Internal Dosimetry Software. Radiation Protection Dosimetry 130 (3), p. 358-367, 2008.

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Published

2018-07-19

How to Cite

Soares, A. B., Arbach, M. N., de Lucena, Éder A., Dantas, A. L. A., & Dantas, B. M. (2018). Development and calibration of a portable detection device for in vivo measurement of high-energy photon emitters incorporated by humans. Brazilian Journal of Radiation Sciences, 6(2A (Suppl.). https://doi.org/10.15392/bjrs.v6i2A.438

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