Acquisition of equal or better planning results with interstitial brachytherapy when compared with intensity-modulated radiotherapy in tongue cancers

Brachytherapy
N V N Madhusudhana SrestyGambhir Sudarshan

Abstract

Intensity-modulated radiotherapy (IMRT) technique in external beam radiotherapy and interstitial implant brachytherapy (ISBT) play important role in the treatment of head and neck cancers. Both are proved to be highly conformal techniques of radiotherapy. In this study, we investigated whether ISBT can give treatment planning results similar to those of IMRT. Fifteen patients with tongue cancer treated with interstitial high-dose-rate brachytherapy were replanned. They were evaluated with the IMRT planning system. Contouring of target volume, including all critical structures was done on the IMRT treatment planning system to closely match implant brachytherapy planning system. Treatment plans were generated after specifying the goals in the prescription. Conformity index and dose to critical organ were calculated and compared between IMRT and ISBT. Planning time was also recorded for both the techniques in all the cases. Very good dose conformity was observed in ISBT, which was almost the same as that in IMRT. Dose to the critical structure was lower in ISBT in all the cases. Planner time was also less in ISBT for more number of cases. Results show that ISBT treatment modality produces equal or superior planning results when co...Continue Reading

References

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Citations

Nov 28, 2012·Journal of Radiation Research·Hideya YamazakiKazuhiko Ogawa
Jan 9, 2015·Radiation Oncology Journal·Sung Uk LeeChi Young Jeong
Oct 6, 2020·Indian Journal of Surgical Oncology·Ram Charith AlvaT Revath

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