Calculation of Dosimetric Parameters for 252Cf-AT Brachytherapy Source using Monte Carlo Simulation

Document Type : Original Article

Authors

1 Lecturer of Radiology.Department of Radiology, Behbahan School of Medical Sciences, Behbahan, Iran.

2 Coach to be Written.School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran.

3 Master of Medical Physics Radiology.Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.

4 Master of Medical Physics.Physicist of Parsian Hospital, Shahrekord, Iran

5 Master of Physics.Department of Physics, Shiraz University, Shiraz, Iran.

Abstract

Background and Objective: Nowadays, the use of simulation for accurate determination of dosimetric parameters is inevitable. In this study dosimetric parameters 252CF-AT as a neutron brachytherapy sources using Monte Carlo simulation was calculated for treatment planning of some uterus and brain tumors.
Materials and Methods: Thephysical and geometrical characteristic of 252Cf-AT source were estimated by MCNPX (2.6.0) code and the air kerma strength of the source placed inside the vacuum sphere was calculated. Recommended dosimetric parameters by AAPM, TG-43 protocol were determined for source positioned in a homogeneity water phantom.
Results: The air kerma strength of 252 Cf source was estimated 0.33 (cGycm2/μg.h). The neutron dose rate constant using *F8 and F6 tallies was calculated 5.7524 (cGy/U.h), 5.650816 (cGy/U.h) respectively. The radial dose function with 5 degree equation was obtained. Numerical amounts of the anisotropy dose functions and the related equations were also calculated.
Conclusion: The calculated dosimetric parameters of the model 252Cf-AT source by Monte Carlo code are in good agreement with experimental results and previous calculations. The calculated values can be used by treatment planning systems for the 252Cf-AT source brachytherapy.
 
 

Keywords

References

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Jundishapur Scientific Medical Journal
Volume 15, Issue 4 - Serial Number 103
September and October 2017
Pages 383-390

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History

  • Receive Date: 21 January 2016
  • Revise Date: 24 April 2016
  • Accept Date: 29 June 2016

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