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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. 4, No. 4, 2008, pp. 173-177
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Bioline Code: cr08051
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Cancer Research and Therapeutics, Vol. 4, No. 4, 2008, pp. 173-177
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A dose verification method for high-dose-rate brachytherapy treatment plans
Kumar, Rajesh; Sharma, SD; Vijaykumar, C; Deshpande, Sudesh; Sharma, PK; Vandana, S; Philomena, A & Chilkulwar, Ravi H
Abstract
Aim: To evolve a fast dose verification method for high-dose-rate (HDR) brachytherapy treatment plans and to demonstrate its applicability in different clinical cases.
Materials and Methods: We developed a software tool in VC++ for the Varisource HDR unit for HDR dosimetry plan verification using TG-43 parameters. HDR treatment dosimetry of a number clinical cases using Varisource was verified by comparison with the treatment planning system (TPS).
Results: A number of different types of clinical cases treated by Varisource were evaluated. TPS calculated dose values and verification code calculated dose values were found to agree to within 3% for most of the dose calculation points.
Conclusions: We have validated with clinical cases a fast and independent dose verification method of the dosimetry at selected points for HDR brachytherapy treatments plan using TG-43 parameters. This can be used for the verification of the TPS calculated dose at various points. The code is written to work with Varisource, but it can conceivably be modified for other sources also by using the fitted constant of the respective source.
Keywords
Brachytherapy, dose verification, dosimetry, TG-43 formalism, treatment planning
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© Copyright 2008 Journal of Cancer Research and Therapeutics. Alternative site location: http://www.cancerjournal.net/
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