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Journal of Cancer Research and Therapeutics
Medknow Publications on behalf of the Association of Radiation Oncologists of India (AROI)
ISSN: 0973-1482
EISSN: 0973-1482
Vol. 7, No. 3, 2011, pp. 308-313
Bioline Code: cr11077
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Cancer Research and Therapeutics, Vol. 7, No. 3, 2011, pp. 308-313

 en Estimation of inhomogenity correction factors for a Co-60 beam using Monte Carlo simulation
Praveenkumar, R D.; Santhosh, K P. & Augustine, A

Abstract

Aim: The aim was to obtain inhomogenity correction factors (ICFs) for lung tissue inhomogenity for a Co-60 teletherapy beam using Monte Carlo simulation and to compare them with factors obtained from a commercially available treatment planning system.
Materials and Methods: The Monte Carlo simulation code of EGSnrc is used for the depth dose calculations. Two clinical like situations were simulated-dose calculation point beyond the lung tissue volume and dose calculation point within the lung tissue volume. The variation of ICF with lung thicknesses and positions was studied. ICF values were obtained for the similar situations from a commercially available treatment planning system, Theraplan Plus.
Results: Percentage depth dose data obtained from Monte Carlo simulation is well matching with the published measurement data. ICFs for lung tissue inhomogenity calculated using the Monte Carlo code are in good agreement with Theraplan Plus TPS values for small inhomogenity thicknesses.
Conclusion: These results can be used for the verification of TPS calculation or manual treatment time calculation.

Keywords
EGSnrc code, inhomogenity correction factor, Monte Carlo simulation, Theraplan Plus TPS

 
© Copyright 2011 Journal of Cancer Research and Therapeutics.
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