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Program Information

Investigation of Dose Variation in High Dose Radiation Brachytherapy

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M Hyvarinen

M Hyvarinen1*, S Pella2 , T Leventouri3 , C Casey4 , N Dumitru5 , R Herrera6 , S Long7 , (1) Florida Atlantic University, Boca Raton, FL, (2) South Florida Radiation Oncology & Florida Atlantic University, Boca Raton, FL, (3) Florida Atlantic University, Boca Raton, FL, (4) Florida Atlantic University, Boca Raton, FL, (5) University of Bucharest, Bucharest-magurele, Ilfov, (6) Louis Stokes VA Medical Center, Cleveland, OH, (7) Florida Atlantic University, Boca Raton, FL


SU-E-T-636 Sunday 3:00PM - 6:00PM Room: Exhibit Hall

Purpose: The purpose of this study is to revise most of the HDR types of treatments with their applicators and their localization challenges. Since every millimeter of misplacement counts the study will look into the necessity of increasing the immobilization for several types of applicators

Methods: The study took over 136 plans generated by the treatment planning system (TPS) looking into the applicator’s placement in regard to the organs at risk (OR) and simulated the three possible displacements at the hottest dose point on the critical organ for several accessories to evaluate the variation of the delivered dose at the point due to the displacement.

Results: Significant dose variation was obtained for the Contura, Savi, MLM and Prostate applicators.

Conclusion: This study data indicates that an improvement of the immobilization devices for HDR is absolutely necessary. Better applicator fixation devices are required too. Developing new immobilization devices for all the applicators is recommended.

Funding Support, Disclosures, and Conflict of Interest: Florida Atlantic University may provide Travel reimbursements.

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