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Title: SU-E-T-636: Investigation of Dose Variation in High Dose Radiation Brachytherapy

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. Florida Atlantic University may provide Travel reimbursements.
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Florida Atlantic University, Boca Raton, FL (United States)
  2. South Florida Radiation Oncology and Florida Atlantic University, Boca Raton, FL (United States)
  3. University of Bucharest, Bucharest-magurele, Ilfov (Romania)
  4. Louis Stokes VA Medical Center, Cleveland, OH (United States)
Publication Date:
OSTI Identifier:
22402241
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Physics; Journal Volume: 41; Journal Issue: 6; Other Information: (c) 2014 American Association of Physicists in Medicine; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; BRACHYTHERAPY; DOSE RATES; EQUIPMENT; PLANNING; PROSTATE; RADIATION DOSES