Deconvolution method to split up X-ray peaks emitted by 223Ra

Authors

  • Rafael Figueiredo Pohlmann Simões Instituto de Radioproteção e Dosimetria Instituto Nacional do Câncer José Alencar Gomes da Silva
  • Carlos José da Silva Instituto de Radioproteção e Dosimetria
  • Ronaldo Lins da Silva Instituto de Radioproteção e Dosimetria
  • Roberto Poledna Instituto de Radioproteção e Dosimetria
  • Paulo Alberto Lima da Cruz Instituto de Radioproteção e Dosimetria
  • Lídia Vasconcellos de Sá Instituto de Radioproteção e Dosimetria

DOI:

https://doi.org/10.15392/bjrs.v6i1.353

Keywords:

X-Ray, Spectrometry, X-Ray Emission, Area Under Curve, 223Ra.

Abstract

The Radium-223 (223Ra) has being used as a medicine for localized treatment of patients with osteoblastic metastasis originated by prostate cancer resistant of castration or hormone refractory. For a better treatment with this radionuclide, clinical images are one path to turn achievable organ's dosimetry for each patient. The X-rays emitted by 223Ra demonstrated as the main way to turn the image acquiring feasible. In order to study this X-ray area, deconvolution is necessary to split up the mains X-ray peaks that are measured by a high-purity germanium detector as doublet peaks in a complex region of the spectrum below 100 keV. For this, the Colegram® code was applied using the Low Energy X Voigt fitting curve on raw data source from Maestro® software. Results of activity using the deconvolution data from this work were in agreement with values obtained at absolute standardization live-time anticoincidence counting. The Colegram® code demonstrates a powerful tool to aid Maestro to split up the mains overlapped X-rays emitted by 223Ra.

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Author Biographies

Rafael Figueiredo Pohlmann Simões, Instituto de Radioproteção e Dosimetria Instituto Nacional do Câncer José Alencar Gomes da Silva

Laboratório Nacional de Metrologia das Radiações Ionizantes

Física Médica

Carlos José da Silva, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Ronaldo Lins da Silva, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Roberto Poledna, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Paulo Alberto Lima da Cruz, Instituto de Radioproteção e Dosimetria

Laboratório Nacional de Metrologia das Radiações Ionizantes

Lídia Vasconcellos de Sá, Instituto de Radioproteção e Dosimetria

Departamento de Física Médica

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Published

2018-01-28

How to Cite

Simões, R. F. P., da Silva, C. J., da Silva, R. L., Poledna, R., da Cruz, P. A. L., & de Sá, L. V. (2018). Deconvolution method to split up X-ray peaks emitted by 223Ra. Brazilian Journal of Radiation Sciences, 6(1). https://doi.org/10.15392/bjrs.v6i1.353

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